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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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7 votes
2 answers
279 views

Graphical artifacts appearing on translucent lines in plots [duplicate]

I am trying to plot lines with some translucent behavior, for which I set the opacity to some number in PlotStyle. However, this gives me random squares in the plot ...
JamesVR's user avatar
  • 407
2 votes
2 answers
73 views

`Integrate` gives an imaginary part for a 1-d definite integral of a real-valued function

I'm using Integrate to evaluate an integral with known result: $$\int_0^\pi \frac{\cos(n \theta)-\cos(n \theta_0)}{\cos(\theta)-\cos(\theta_0)} d\theta = \frac{\pi\...
Jie Zhu's user avatar
  • 798
4 votes
0 answers
62 views

SVG export is rasterized with certain colors

Exporting a mostly-transparent rectangle as SVG gives an expected result: ...
Stephen Powell's user avatar
5 votes
3 answers
331 views

Why is the general term of the sequence obtained using the RSolve function incorrect? Could it be a bug?

Bug introduced in 5.0, persisting through 14.0. Using the RSolve function to find the general term of the sequence is as follows: ...
csn899's user avatar
  • 4,315
4 votes
3 answers
238 views

How to make Mathematica plot for a very small region?

I have the following data that I would like to plot using ListPlot. ...
QFTheorist's user avatar
8 votes
2 answers
159 views

FindRoot changes results from ParametricNDSolve

I solve numerically an equation, and I get the expected behaviour like the following graph But if I use FindRoot to get the roots before plotting, the plot of my ...
William Santos's user avatar
4 votes
0 answers
93 views

Weird behavior of derivative D[] function in v11

Bug introduced after version 9.0.1, in or before version 11.0, fixed before 12.3. Recently I noticed that a code developed in v13 was giving unexpected errors about the formatting of matrices in v11 (...
Hans Olo's user avatar
  • 1,843
5 votes
1 answer
276 views

FourierTransform and InverseFourierTransform are not inverses when using non-default FourierParameters

FourierTransform and InverseFourierTransform are inverses of each other when using the default ...
tparker's user avatar
  • 1,856
2 votes
0 answers
54 views

Why RandomSample fails and how to fix this?

Consider the following sampling: weights = 10^RandomReal[{-13, Log10[35]}, 499500]; vals = Range[Length[weights]]; randomvals = RandomSample[weights -> vals]; ...
John Taylor's user avatar
  • 5,827
7 votes
2 answers
347 views

Wrong result for simple real-valued integral (spurious imaginary part)

There's a question on math SE (question 4879248) about this integral: ...
Jos Bergervoet's user avatar
4 votes
1 answer
61 views

Plot freezes with arbitrary precision complex evaluations

I find that Plot has some strange behavior. a = {{-5.355`3 I, 0.1589`3 }, {2.305`3, 0.01425`3}}; Det[a] // Abs gives ...
Ming's user avatar
  • 91
11 votes
1 answer
555 views

Why is Mathematica showing a root twice from Reduce or Solve?

If we plot the following, we can see there are seven roots Plot[{x, 3 Pi (1 - Sin[x])}, {x, 0, 22}] We can easily solve for these roots ...
Moo's user avatar
  • 3,334
7 votes
1 answer
153 views

Incorrect result for Integrate[] over Region

I was doing a calculation that involved integrating rational functions over a triangular region, and eventually noticed some of my results didn't make any sense. After some investigating, I was able ...
smish's user avatar
  • 51
3 votes
1 answer
66 views

ImagePartition with offset. Something wrong with the number of images

I want to do ImagePartition with offset whose offset size is different with x(horizontal) and y(vertical). Here I got Lena image from https://en.wikipedia.org/wiki/Lenna#/media/File:Lenna_(test_image)....
rani's user avatar
  • 321
6 votes
1 answer
119 views

Work around for subscripts and superscripts in text cells reverting to SuperScript[...]

Seemingly randomly nicely formatted superscripts and subscripts (e.g. to look like $f_1$) in math in text cells will revert to their long form e.g. Subscript[f, 1]. ...
Kvothe's user avatar
  • 4,491
4 votes
1 answer
123 views

NIntegrate returns TerminatedEvaluation["RecursionLimit"] when called in another function

I try to perform some numerical integration with high precision on version In[1]:= $Version Out[1]= "13.3.1 for Linux x86 (64-bit) (July 24, 2023)" Here ...
SimonM's user avatar
  • 41
7 votes
1 answer
138 views

Why does VertexColors break Strikethrough?

Bug introduced in 12.3 and persisting through 14.0 FontVariations -> {"StrikeThrough" -> True} stops working when ...
Mr.Wizard's user avatar
  • 272k
4 votes
1 answer
128 views

Why does Mathematica's interface freeze when scrolling to the evaluating cell?

I have some heavy computations in Mathematica that use parallelization. The CPU consumption is ~80-90%. I use ProgressIndicator to trace the progress of the ...
John Taylor's user avatar
  • 5,827
3 votes
0 answers
121 views

DSolveValueNew - A leftover from the development of Wolfram Mathematica14.0?

I found that when you type DSolveValue a suggestion for DSolveValueNew appears. It looks that it is a leftover from the development of version 14.
Nitra's user avatar
  • 347
5 votes
1 answer
177 views

Finding intersection of two curves using mesh functions

I have the following code which finds intersection of two curves using mesh functions: ...
codebpr's user avatar
  • 2,253
10 votes
1 answer
174 views

Precision of interpolation function after exporting and importing

I've solved a differential equation using NDSolve with a large working precision prec. The output is a few interpolating ...
MarcosMFlores's user avatar
10 votes
2 answers
216 views

Getting different results when integrating with fractions vs decimals [closed]

Bug introduced in 13.3 Not sure what in the Mathematica is going here—admittedly I am a beginner. But these two expressions seem to me that they should produce the same results. ...
Michael's user avatar
  • 101
8 votes
1 answer
242 views

Unicode symbols not encoded properly in BarcodeImage[] in Mathematica 13.3

Trying to generate a simple QR code with ← or U+2190. I got varying results: the same in Mathematica versions 12.3 and 13.1 but very different in version 13.3. Mathematica 13.3 was updated to ...
David Caliri's user avatar
2 votes
1 answer
187 views

Wolfram Engine 13.3.0 dies, is this a bug?

$ wolframscript Wolfram Language 13.3.0 Engine for Linux x86 (64-bit) Copyright 1988-2023 Wolfram Research, Inc. ...
Ytrewq's user avatar
  • 179
0 votes
0 answers
24 views

ChannelObject::connfail Error

My Mathematica keeps deadlock in DynamicEvaluation and throws the following error upon Abort. How to stop this behavior? ...
Everett You's user avatar
  • 2,277
11 votes
5 answers
2k views

Why does Mathematica not recognize a convergent series?

Bug introduced in 12.1, persisting through 13.2 or later In one of my program run on Wolfram Cloud I run the command: Sum[(-1)^(Floor[k/2])/(k+1),{k,0,Infinity}] ...
drer's user avatar
  • 719
9 votes
2 answers
399 views

Why does Mathematica get the infinite sum of this representation of the taylor series of $\cos^2(x)$ wrong?

Bug introduced in 12.0 or earlier, persisting through 13.2 or later Mathematica correctly identifies this sum as $\cos(x)$: ...
Samuel Martineau's user avatar
1 vote
0 answers
92 views

Why does ridiculous error information appear in Classify with Method GradientBoostedTrees?

The data could be classified correctly by method like LogisticRegression, NearestNeigbors. The dataset is quiet simple, ...
HyperGroups's user avatar
  • 8,619
7 votes
1 answer
121 views

Points are plotted twice in ListPlot

When I do a plot like this ListPlot[ {Style[{1, 2}, Red], Style[{2, 3}, Blue], Style[{3, 4}, Green]} ] under the colored points, there are duplicates ...
user40761's user avatar
  • 121
2 votes
1 answer
146 views

One more incorrect result of CDF

In 13.3.1 on Windows 10 I find ...
user64494's user avatar
  • 26.6k
3 votes
2 answers
70 views

Bug in Point Group Conjugacy Class Data

I noticed that in $Version == "13.2.0 for Mac OS X x86 (64-bit) (November 18, 2022)" Mathematica has conflicting ...
evanb's user avatar
  • 6,131
4 votes
1 answer
224 views

How to execute a String code in the form of StandardForm?

How to execute a String code in the form of StandardForm? I want to get execution results for strings of various forms. For this, I used ToExpression. ...
Milk's user avatar
  • 1,718
6 votes
3 answers
237 views

Incrementing a random element of an array repeatedly

Consider this code to simulate a simple instance of the coupon collector problem. We initialize an array to {0, 0} and then keep incrementing a random element until we've incremented every element at ...
dreeves's user avatar
  • 696
0 votes
1 answer
93 views

Incorrect results for Integrate[Cosh[x]/(Sinh[x] + Cosh[x]), x] [closed]

Input: ...
Boris's user avatar
  • 1
5 votes
2 answers
236 views

An incorrect result of CDF

In 13.3.1 on Windows 10 I execute ...
user64494's user avatar
  • 26.6k
5 votes
1 answer
230 views

Implementation of SINC filter using Integrate results in incorrect output

Bug introduced in 6.0, persisting through 13.3.1. This is SINC filter, integrate $|H|^2$ from $-\pi/2$ to $\pi/2$. MMA CODE, Result = 7.27956e-12 ...
Ring's user avatar
  • 137
1 vote
1 answer
114 views

Method options for `BooleanMinimize`

I am learning about Boolean Functions and I noticed in the docs for BooleanMinimize they reference a Method option, but don't provide what those options can be. Is there any more information on how ...
anandj's user avatar
  • 11
0 votes
0 answers
25 views

DynamicGeoGraphics rendering error when AspectRatio is given, and the output does not match ImageSize

Here's a minimal example. gm = GeoMarker[{{42.34, -71.08}, {42.35, -71.07}, {42.36, -71.06}}]; DynamicGeoGraphics[gm,AspectRatio->1] Since GeoGraphics does ...
jWey's user avatar
  • 73
4 votes
1 answer
95 views

Chemdraw (CDX) import fails to yield complete molecules for implicit alkyl chains

Mathematica has supported Chemdraw file (CDX) import since 12.1. However, there appear to be an error when side chains are defined in an abbreviated fashion (as is common in organic chemistry): ...
Joshua Schrier's user avatar
4 votes
3 answers
171 views

Problem with FindGeometricTransform and NMinimize

I'm interested in Centroidal Voronoi tessellation. Here are two examples of unit disk tessellations: They are the same with respect to rotation. Recently, I've found ...
lesobrod's user avatar
  • 1,699
4 votes
2 answers
248 views

`RegionWithin` returns incomprehensible result

I try to get the condition "ball inside cube" RegionWithin[Cuboid[{0, 0, 0}, {a, b, c}], Ball[{x, y, z}, r]] but Mathematica v12.2 gives error ...
Ulrich Neumann's user avatar
9 votes
0 answers
222 views

Why is CorrelationFunction returning a value greater than 1?

OK, I'm getting crazy on this: CorrelationFunction[ARProcess[{0.9}, 1], 1] And the output is... 1.071 (!) The symbolic version ...
Massimo Ortolano's user avatar
1 vote
1 answer
74 views

NCAlgebra 6.0.2 fails to compute the gradient of the trace of a simple quadratic product

NCAlgebra version 6.0.2 fails to compute the gradient of the trace of a quadratic product. Works fine in version ...
Drmanifold's user avatar
3 votes
1 answer
75 views

Percent symbol with FontFamily setting looks weird in Dendrogram

Bug introduced in 12.3.1 or earlier, persisting through 13.3.1. ...
Y. zeng's user avatar
  • 567
1 vote
0 answers
88 views

How to resolve the following problem with DialogInput/PopupMenu?

Consider the following DialogInput: ...
John Taylor's user avatar
  • 5,827
1 vote
0 answers
28 views

Python external evaluator missing first print

Can you confirm this bug when evaluating Python code in Mathmatica? Type > select Python by clicking on the icon on the left then paste the following code and ...
azerbajdzan's user avatar
  • 18.6k
7 votes
1 answer
102 views

Unexpected behavior of `Exponent`

Fixed in Version 14.0 According to Exponent: Exponent[expr, form] gives the maximum power with which ...
user688486's user avatar
7 votes
1 answer
274 views

Why does RegionDifference crash my PC?

I have a simple polygonal region difference: ...
Rainer Glüge's user avatar
6 votes
0 answers
96 views

SetOptions[Plot, FIlling -> Axis] breaks SmoothHistogram of a CDF

Bug introduced in 12.1 or earlier and persists through 13.3 . UPDATE: I reached out to Wolfram, and they confirmed that it's a bug. I am using version 12.3. Here's a simple plot of some randomly ...
Brian's user avatar
  • 133
2 votes
0 answers
97 views

Does VertexChromaticNumber return the optimal value?

The following code is meant to make a graph where each node represents a bitstring of length d and two nodes are connected if and only if the Hamming distance between their bitstrings is exactly 2. It ...
Simd's user avatar
  • 1,119

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