Questions tagged [bugs]

This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions. Please use the standard bugs header instead of version tags in conjunction with this tag.

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3 votes
1 answer
102 views

FourierCosTransform bug?

FourierCosTransform[Cos[(k + p) z], z, q] gives correct result ...
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6 votes
0 answers
79 views

Annoying black line in tilted LinearGradientFilling

This Graphics[{LinearGradientFilling[{{0, Blue}, {1, LightBlue}}, -Pi/4], Rectangle[{0, 0.6}, {0.6, 1}], Filling -> Left}] produces this graphic The diagonal ...
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5 votes
1 answer
113 views

RegionFunction is not working for ComplexPlot

Bug introduced in version 13.0 I'm very new to mathematica and I've just begun plotting colorplots for Complex functions. Currently, I'm trying to set the output to be only restricted to the unit disk ...
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  • 93
2 votes
0 answers
69 views

InverseLaplaceTransform gives inconsistent results

These should give the same results, but they do not: InverseLaplaceTransform[1/Sqrt[x] HeavisideTheta[x + 1], x, y] InverseLaplaceTransform[1/Sqrt[x], x, y] ...
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  • 2,721
6 votes
0 answers
118 views

Bugs in hypergeometric functions with negative integer lower parameters

If you were to evaluate these expressions, Mathematica returns the value shown. ...
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  • 61
4 votes
1 answer
70 views

Problem with labeled functions and ParallelEvaluate [duplicate]

Bug introduced in 8 or earlier and persisting through 13.0.1 I came across behaviour of ParallelEvaluate that I do not understand. In a loop I define five ...
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  • 903
5 votes
1 answer
122 views

PlotRangeClipping is not working correctly with ListLinePlot?

Bug introduced in 12.3 or earlier and persisting through 13.0.1 ...
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0 votes
1 answer
51 views

Strange result after normalize EigenValues of matrix

I'm trying to get SVD of matrix. but when I multiply matrix, I couldn't get the same matrix. I use wolfram to see decomposition and see what matrix named by "V" have some diference idk why. ...
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  • 1
5 votes
1 answer
107 views

Style Does Not Work in ListLinePlot

The documentation indicates simple, consistent, and intuitive usage for wrappers in ListLinePlot and ListLinePlot3D. However, ...
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8 votes
0 answers
97 views

How to customize multipanel BarCharts (e.g., ChartLayout -> "Row")?

Bug introduced in 13.0 In version 13.0.0 support for multipanel plots has been added to 15 visualization functions —among them ...
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  • 12.3k
1 vote
1 answer
107 views

Why does this TeXForm cause many errors?

Why do I get this error? I don't do any calculation with this. I just want to use TeXForm and then wrap MaTeX around it. ...
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  • 1,750
4 votes
1 answer
125 views

What does this result of Limit mean?

In version 13.0.1 on Windows 10: ...
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  • 16.8k
3 votes
0 answers
72 views

JoinAcross Memory Leak

I believe JoinAcross may have a memory leak but would appreciate some help looking at it. It appears to be small when used just once but when iterated a lot it eventually crashes my wolframscripts. I'...
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  • 572
7 votes
3 answers
181 views

RotateLabel doesn't work?

Bug introduced after 12.0.0 and persisting through 13.0.1 or later I'm creating a really simple plot with the code attached below. However the y-axis label is rotated and parallel to the y-axis by ...
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  • 79
5 votes
3 answers
272 views

DSolve returning "Indeterminate"

Bug introduced in 13.0 or earlier and persisting through 13.0.1 or later I am trying to solve the following differential equation with Mathematica: $$ z\,(1-z)\,\psi''(z)-2 z\,\psi'(z)-\frac{3}{4}\...
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  • 457
2 votes
1 answer
91 views

Why does SolidMechanicsStrain calculated inside a module give strange results?

I am exploring the FE capabilities of Mathematica and trying a few solid mechanics problems with the aim of bringing them into my teaching. The problem is a simplified version of the coupled heat ...
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  • 3,524
4 votes
1 answer
134 views

Why `Integrate[-2 E^x - E^x x^2 Cos[x] - x^2 Sin[x], {x, 0, Infinity}]` is evaluated to `7/2`? Is it a bug?

I have noticed that integral Integrate[-2 E^x + 2 E^x Cos[x] - E^x x^2 Cos[x] + 2 E^x x Sin[x] - x^2 Sin[x] + E^x x^2 Sin[x], {x, 0, Infinity}] evaluates to ...
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  • 2,721
7 votes
3 answers
466 views

Zero result from a positive integral

Bug introduced in 12.2 or earlier and persisting through 13.0.1. How to calculate the following symbolic integral in MMA? Every variable is real. Although the integrand is always positive, MMA (mine ...
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  • 4,006
5 votes
0 answers
58 views

Bug? GraphicsGrid with Item Elements

Is there a bug in the GraphicsGrid routines such that it no longer handles Item elements? There are a couple examples in the GraphicsGrid documentation (under the FrameStyles section) that give ...
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  • 271
1 vote
0 answers
81 views

Cannot verify solution provided by DSolve

Below is my Mathematica code to solve a system of partial differential equations. In my attempt to verify the solution (shown below), it seems to me that the solution satisfies ...
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  • 11
3 votes
2 answers
63 views

Character encoding of the output from URLExecute

Bug persisting through 13.0.1 I'm using URLExecute to fetch some data from the arXiv preprint server but it seems that the encoding of the text I get is not ...
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  • 3,302
4 votes
0 answers
97 views

Possible Mathematica bug

I believe the following two integrals should have the same value, since the Boole[] expression always evaluates to 1 in the ...
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0 votes
1 answer
159 views

How to correctly calculate an improper integral with Mathematica?

I try in version 13 on Windows 10 j = Integrate[Exp[a*x^2 + b*x*y + c*y^2], {x, -Infinity, Infinity}, {y, -Infinity, Infinity}, Assumptions -> {a, b, c} ∈ Reals] ...
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  • 16.8k
8 votes
1 answer
210 views

How can I create accurate image masks from Graphics?

I am looking to generate image masks using Graphics. For this, the requirements are that: The rasterized mask must have the exact same dimensions as the image with ...
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  • 224k
11 votes
2 answers
243 views

How to draw a circle axis by AxisObject

This is my current try, but I don't know why it cannot put in the right position: ...
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  • 23.4k
3 votes
0 answers
67 views

MoleculeModify[{"DeleteAtom", a}] behaving strangely

I am encountering a strange error with the following molecule: ...
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  • 4,677
0 votes
1 answer
78 views

For[i] StringDrop Not working

I'm currently trying to code a For Loop that includes StringDrop: For[i=0, i<=100,i++, Print[StringDrop[list[[i,1]],4]]] Where list is an array and the first ...
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2 votes
1 answer
85 views

Is there an alternative (instead of using Opacity) to obtain a clear parts for the overlapping area of three RegionPlots?

I want to combine three RegionPlot, and I need to do this in a way such that the overlapping and intersection parts of the plots are visible and clear. I use this ...
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  • 127
9 votes
1 answer
185 views

NIntegrate can't handle InterpolatingFunction produced by FiniteElement properly?

This is a problem comes out in the discussion here and I think it's worth posting a new question for it. Consider the following sample: ...
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  • 51.6k
1 vote
0 answers
83 views

ContourPlot3D gives confusing plot

ContourPlot3D [z == Sqrt@(x + y), {x, -5, 5}, {y, -5, 5}, {z, - 5, 5}, AxesOrigin->{0,0,0},AxesLabel->{x,y,z}] z < 0, there is also some graph? ...
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  • 6,617
5 votes
1 answer
114 views

Unexpected high memory consumption using out-of-core NetTrain

I'm working on training a neural network on an image dataset. There are 14k images and each image contains 3x150x150 pixels. I have built a generator function following the approach in Training on ...
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4 votes
1 answer
196 views

Memory use buildup when solving PDE multiple times

Mathematica V 13.0 Mac OS X ARM (64-bit) - MacBook Pro 13" M1 processor macOS Big Sur 11.6.2 I am solving a PDE numerically and have noticed that memory use keeps piling up if I execute the same ...
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4 votes
1 answer
125 views

Why RegionMeasure returns a complex value?

Bug introduced in 12.1 or earlier and persisting through 13.0 Consider the following region: ...
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  • 3,544
7 votes
2 answers
227 views

Trace works differently with different right-hand-side rules—bug?

Bug introduced in 2.1 or earlier and persisting through 13.0 UPDATE: Wolfram Support has confirmed that this is a bug. I noticed that Trace does the following ...
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  • 7,749
2 votes
2 answers
103 views

First character of inline cell is partially cut off

Bug introduced in 12.3 or earlier and persisting through 13.0.0 [CASE:4900891] Notice how the "f" is partially cutoff in the following inline cell. Here is the textual form. ...
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  • 199
7 votes
1 answer
101 views

RunProcess computation time steadily increasing for the same command -- what gives?

I am running an externally compiled C++ program using RunProcess, and I encountered a strange thing: when I run the RunProcess ...
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  • 311
13 votes
1 answer
186 views

Autocomplete in Mathematica 13

Bug introduced in 13.0.0 If I type f[x_Inte and hit Tab to autocomplete, MMA correctly autocompletes this into f[x_Integer. But ...
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5 votes
1 answer
203 views

Why does the audio become longer after importing it?

I was making a video by combining some images and this audio, when I encounter the problem: I need to get the duration of the audio, and when I use Duration ...
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  • 188
5 votes
2 answers
90 views

Exporting Plot with Filling creates unwanted Outline around Filling

Bug introduced in 12 or earlier and persisting through 13.0.0 [CASE:4899765] The following code generates a plot that has a faint outline around the top, left, and right boundaries of the filling. ...
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  • 580
10 votes
4 answers
568 views

Integrate returns "diverging integral" for obviously convergent expression

Integrate[Cos[phi]^2*Sin[phi]^n, {phi, 0, Pi}, Assumptions -> n > 0] on Mathematica 13.0 returns the obviously mistaken error message (...
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15 votes
1 answer
275 views

Integration Bug?

Bug introduced in 8 and persisting through 13.0 Mathematica 11.2.0.0 Home edition on MacBook Pro OS X 10.10.5 (Yosemite). ...
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  • 847
6 votes
1 answer
207 views

Using Integrate and then Series seem to produce a wrong result

Run this: ...
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2 votes
2 answers
156 views

Derivative of a definite integral

The derivation process of a definite integral is as follows: (* D[Integrate[(1 + t^4)^(-1/2), {t, x^2, x^3}],x] = (3x^2)/Sqrt[1 + x^12]-(2x)/Sqrt[1 + x^8] *) However, the results obtained by ...
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  • 1,365
11 votes
0 answers
188 views

What in all the world is StreamPlot doing?

This really should not be hard: StreamPlot[{1, 1}, {x, 0, 1}, {y, 0, 1}, StreamStyle -> {Arrowheads[.02], Darker[Pink]}] But this is the mess Mathematica turns ...
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  • 4,119
11 votes
1 answer
166 views

Ticks issue for ListLogPlot

Bug introduced in 12.1 or earlier and fixed in 13.0.0 Consider the following plot (Mathematica 12.1): ...
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  • 3,544
0 votes
1 answer
67 views

a possible bug in IntervalUnion when applied to DateInterval

This bug persists in 13.0.1. It seems IntervalUnion may lead to unexpected results when applied to DateInterval with a ...
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  • 4,157
1 vote
2 answers
84 views

Why there are edges and wrong figure displayed after exporting a Polygon

Bug introduced in 12.3.1 or earlier and persisting in 13.0.0 [CASE:4897465] I use Polygon to plot a figure, and then export it to different formats. The SVG and ...
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  • 851
4 votes
3 answers
549 views

Infinite sum bug

Why: Limit[Sum[Sqrt[-i^2 + n^2]/n^2, {i, 1, n}], n -> Infinity] (* 0 *) but: Integrate[Sqrt[1 - x^2], {x, 0, 1}] (* Pi/4 *) ...
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  • 1,365
8 votes
1 answer
224 views

Inconsistent behaviour between Active and Inactive forms of PDEs (finite element method)

I have been using the finite element tools in Mathematica version 13.0 to solve eigenvalue problems in physics (Schrödinger equation) using NDEigensystem, but I am having some issues with non-...
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14 votes
1 answer
330 views

Wrong Graphics coordinate system after Image to Graphics conversion

Bug persisting through 13.0.0 [CASE:4896512] If I upload this image (originally this img was generated by EdgeDetect) by normal ...
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  • 23.4k

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