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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10
votes
3answers
522 views

Wrong results from NSolve on coupled polynomials. WorkingPrecision -> Automatic fails

OP UPDATE: I received an email from WR on 1-18-2016: "...It does appear that the NSolve function is not behaving properly in this case and I have forwarded an incident report to our developers with ...
4
votes
1answer
119 views

Bug in HypergeometricPFQRegularized?

Bug persisting through 11.2 I'am facing a trouble with HypergeometricPFQRegularized. Mathematica hangs if imaginary part of one of the arguments has zero imaginary part with decimal point as the ...
30
votes
3answers
614 views

Is there an issue tracker for already reported Mathematica bugs?

Since I'm working at least 50% on Linux which is probably the operating system which gets not so much attention from Wolfram, I find new bugs regularly. What bothers me the most is, that tracking a ...
13
votes
0answers
219 views

Bug? Numerical calculation error with FullSimplify and arbitrary precision

Bug introduced after 5.2, fixed in 8.0, reintroduced in 9.0 and persisting through 11.3 Is this a bug? If I do FullSimplify[n E^(0``10 n)] then it returns <...
6
votes
1answer
83 views

ReplaceList Except Alternatives bug

Bug introduced in 11.3 or earlier and persisting through 12.0 or later [CASE:4352435] and [CASE:4354378] In Mathematica 11.3 and 12.0, ...
5
votes
1answer
259 views

Fourier transform of Exp[x]/x

Could you please explain why Mathematica gives the following expression when taking Fourier transform of $\exp(\lambda z)/\lambda$? $$\frac{-\log(-z)+\log(z)}{\sqrt{2\pi}}$$ Why the answer does not ...
4
votes
3answers
241 views

PlotLegend frame disappears during Export

Bug introduced in 11.2 or earlier and persisting through 12.0 I placed a framed PlotLegend and it works just fine in the notebook, but after exported to ...
10
votes
1answer
242 views

A bug in Rasterize and Graphics: diagonal line is under-diagonal

I plot a straight diagonal line and then simply rasterize it. Consider what happens (Mathematica 8.0.4, 10.2, 11.1.1 and 12.0 on Windows 7 x64): ...
2
votes
1answer
63 views

Search using Query fails accessing ChemSpider with Mathematica

Performing a search with "Formula" works as expected. Search with "Query" fails. Printout attached to better document the problem.
10
votes
0answers
138 views

Connecting notebook to remote kernel

I'm trying to connect my FrontEnd session to remote kernel. Manual connection works by creating LinkObject like so: ...
6
votes
1answer
117 views

Why does FindClusters put closer points into different clusters?

Bug introduced in 11.3 or earlier and persisting through 12.0 Bug isn't present in version 8.0.4 I am trying to do clustering and then obtained a plot as below:- ...
1
vote
2answers
80 views

What causes Autonumbering to stop working after “Evaluating” Notebook in 12.0

Bug introduced in 12.0 I'm using "Section" autonumbering in a notebook that contains text and calculations. Normally my "Section" style numbering looks like: ...
4
votes
1answer
36 views

How to use StepMonitor in NMinimize when using vector variable

Bug persists through 12.0 For example, when I call this code ...
11
votes
1answer
97 views

Nondeterministic $Failed when mapping over a Dataset

Consider the following simplified example (on Mathematica 12): ds = Dataset@{<|"hell" -> "o"|>, <|"hell" -> "no"|>}; ...
4
votes
1answer
340 views

How to copy groups of cells with NotebookWrite?

Bug fixed CellGrouping -> Manual isn't needed anymore for copying cell groups. They are copied correctly by default. I'm trying to use: ...
13
votes
2answers
237 views

Differentiation and series expansion of dot product - inconsistent results

Bug introduced in 9.0 or earlier and persisting through 11.3 or later Bug resolved in 12.0 As of 12.0, we have an unevaluated result - inconsistent with the differentiation result, but not invalid. ...
16
votes
1answer
255 views

Bug: x === y but results of a /@ x and a /@ y differ?

Bug introduced in 10.2, and persisting through 11.1 Bug resolved in 12.0 This is strange: ...
2
votes
0answers
58 views

Which words are “protected” from the built-in spell checker?

Bug persisits through 12.0 [CASE:4331923] Some time ago Alan raised an interesting question about spell checking in Mathematica in a comment: <...> does Mma actually recognize Euclidian (vs ...
2
votes
1answer
26 views

DensityPlot: Error messages and strange bar legend

Bug introduced in 11.1.1 or earlier and persists through 12.0 I want to plot the following DensityPlot with axes given by Trr ...
8
votes
3answers
435 views

Numerical minimum of a one-valued function

Bug introduced in 12.0 [CASE:4332003] My problem is that the Kernel cannot finish computation and eats up memory when a simple constraint like 0 <= x <= 2 is ...
4
votes
1answer
37 views

Plotting with sub and superscripts on the PlotLabels

Bug persists through 12.0. I'm trying to produce a plot with PlotLabels that include sub- and superscripts. However, I haven't been able to do it consistently. ...
2
votes
1answer
68 views

JavaGraphics` and CreateDialog don't work with ListPlot in Mathematica 11.3/12

Bug introduced in 11.2 and persists through 12.0, case 4331202 I'm trying to see some plots based on data from a remote cluster as it runs various Mathematica 11.3/12 scripts, so I want to use the ...
8
votes
0answers
130 views

The most bizarre kernel crash ever. Kernel crash in Integrate under simple different setups. Unable to find cause

Reported to WRI. CASE:4330461 V 12 on windows 10 64 bit. Note: This problem do not show up in V 11.3. Only in V12. For the last 2 hrs, I've been trying to zoom into why V12 kernel crash when ...
8
votes
1answer
181 views

ColorFunction doesn't work with custom PlotMarkers

Bug introduced in 10.3.0 and persisting through 12.0 or later This works: ...
13
votes
3answers
591 views

How can I get rid of a persistent tooltip?

From time to time, and in several different computers running various versions of Ubuntu, I've had Mathematica tooltips get "stuck", and persist on the screen even when I navigate away to other ...
10
votes
1answer
120 views

Mathematica 12: Failure with URLRead

Bug introduced in 12.0 The following HTTP request fails to submit the body under version 12, but works in Mathematica 11: ...
5
votes
2answers
81 views

ChartBaseStyle in BarChart3D - possible bug

It looks like ChartBaseStyle in BarChart3D doesn't work in Grid mode when the matrix is larger than 9x9: ...
6
votes
0answers
175 views

Spurious DSolve Solution

Bug introduced in 8.0.4 or earlier, persisting through 12.0. DSolve quickly returns solutions to the following PDE (which is the homogeneous portion of the PDE in ...
4
votes
1answer
91 views

Why should the format of an integral affect the result

This has been reported to Wolfram and confirmed as a bug in Mathematica V12 This follows on from This question I get a different answer for the same integral input in different ways e.g. ...
13
votes
1answer
539 views

NDSolve`FiniteDifferenceDerivative gives wrong result when the precision is not MachinePrecision

Bug introduced in 8 or earlier and persisting through 11.0.1, fixed in 11.3 or earlier. I want to get a pseudospectral differentiation matrix by ...
2
votes
3answers
260 views

Stop notebook from auto-scrolling upon printing

Bug fixed in 12.0 I've long been peeved that the front end scrolls automatically during evaluations, and I've finally sat down to pin down the exact behavior. It seems that the front end auto-...
4
votes
1answer
137 views

Unexpected behavior of SelectionMove

Bug introduced in 11.2 or earlier and partially fixed in 12.0 [CASE:3968507] Now SelectionMove returns $Failed when it cannot ...
10
votes
2answers
206 views

How to explain the behaviour of TreeForm? [duplicate]

Just try this: g=1;a=1;TreeForm[Hold[g[a]]] The weird thing in the outcome is that the node of g displays 1 ,and a is still a. I do not know how to explain ...
3
votes
0answers
112 views

Is it possible to get the original number from DecimalForm?

Bug introduced in 5.2 or earlier and persisting through 12.0 [CASE:4315787] Wrong behavior of NumberForm (DecimalForm outputs ...
10
votes
1answer
114 views

Memory leak with FindMaximum/Minimum inside of Module

This is my first question here. I have to solve coupled first order ODE-s and find the maximum of a function which depends on the solution of the ODE. I have to do this calculation in large quantities,...
21
votes
3answers
512 views

Question about TransitiveReductionGraph

Bug introduced in 10.0 and persisting through 12.0 TransitiveReductionGraph is new in 10.0. In Mathematica 10.0 and 10.1, according to the documentation of ...
7
votes
1answer
81 views

`PlotLegends` not showing correct colour

I want to make a Plot with a styled line, as follows: ...
13
votes
1answer
208 views

Can I trust URLSubmit?

Bug introduced in 11.2 or earlier and persists through V12.0 [CASE:4026293] confirmed Let's create 10 asynchronous requests which just check if the site is there. ...
2
votes
0answers
93 views

Is Mathematica computing the conditional expectation correctly?

Given a simple case of say 2 independent trials each with probability of success 1/3. Consider a random variable that is gives the 3 times the total successes. We can define this random variable in ...
4
votes
2answers
67 views

GeoListPlot - Workaround for distinct coloring of categories - improvement?

GeoListPlot supports multiple lists of locations but once the number of lists exceeds 3, the coloring function for the categories starts to recycle the colors. For example, adding a list to the ...
7
votes
1answer
87 views

Module vs. DynamicModule wrt ProgressIndicator

Why does the following work for Module but not DynamicModule? ...
5
votes
1answer
58 views

Weirdness with Interpolation of data and InverseFunction

Bug introduced in 8 or earlier and persisting through 12.0 Something strange is happening with this list of data: ...
22
votes
2answers
642 views

Integrate returns imaginary answer for smooth, real function

Bug introduced in 7 or earlier and persisting through 12.0.0.0 or later I'm trying to evaluate the integral: $$\int_0^{\infty} \frac{1}{4 b \sqrt{\pi} r} e^{-(b-r)^2}(e^{4 b r} - 1) \mathrm{d}r$$ ...
5
votes
0answers
104 views

White triangles in ListContourPlot

I'm using ListContourPlot with InterpolationOrder -> 0 to plot some data and end up with some seemingly random white ...
16
votes
2answers
321 views
9
votes
2answers
129 views

FindMaximum returns a solution that violates the constraints

I am looking at the following optimization problem $$ \begin{align*} \max\ & 1000 r_1 + \frac{1}{2}r_2 + \frac{1}{3}r_3\\ \text{s.t. }& 1000^2 r_1 + \frac{1}{4}r_2 + \frac{1}{9}r_3 = \frac{1}{...
3
votes
1answer
123 views

Solve returns solution that isn't (always) one

I was asking Mathematica to find the roots of $f(x) = a+\sqrt{x^2-b}$ and it returns $x = \pm \sqrt{a^2+b}$. These are however solutions only if $a\leq 0$ (there are no roots if a is positive since ...
22
votes
5answers
1k views

PDF export on macOS Mojave produces bold fonts

I have updated my OS to macOS 10.14 Mojave. I found whenever I export a plot into a PDF file, the font of the label and ticks are automatically replaced into a bold font. I use Mathematica 11.3. Any ...
9
votes
1answer
288 views

Why ArcTan[1, 0. I ] yields -1.5708+0. I?

Bug introduced in 5.2 or earlier and persisting through 12.0.0 Why ArcTan[1, 0. I ] yields -1.5708+0. I ? The result should ...
6
votes
1answer
154 views

TreeForm and Unevaluated

Bug introduced in 8.0.4 or earlier and persisting through 12.0 or later Check this example: ...