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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15
votes
0answers
83 views

What has changed in pattern matching functions with the Orderless attribute?

In making an attempt to answer this question, we ran into a version-dependent pattern-matching issue. An extended discussion in the comments transpired, and some inconsistencies arose. Consider the ...
5
votes
3answers
143 views

How to label ticks in ListLogLogPlot in scientific form in MMA 10.4?

This is a question regarding ListLogLogPlot in MMA 10.4. I have tried the solutions suggested in 5369, and they do not appear to work in MMA 10.4, so I would be grateful if this could be considered a ...
3
votes
2answers
51 views

GeoRegionValuePlot not using ColorFunction colours

I have a custom Blend for use with GeoRegionValuePlot's ColorFunction option. ...
3
votes
1answer
94 views

Why does RegionUnion fail for these Regions?

Bug introduced in V10.0 and persisting through 10.4.1. Introduction Lately, I asked for a solution to inflate and unite a List of BoundaryMeshRegions: Inflate ...
7
votes
1answer
150 views

Weird behaviour of HighlightImage—bug or not?

For background, check my answer under this question. It is clearly stated in the documentation of HighlightImage that the 2nd argument,...
11
votes
0answers
155 views

integrate giving wrong result

Bug introduced in 7.0 or earlier and persisting through 10.4.1 or later A question with the same title has been asked many times, but I can't find the solution of my problem in their answers. The ...
3
votes
0answers
63 views

Finding all Minimal Cut Sets for Site Percolation?

I want to disconnect the left side from the right side. The minimal cut set $C$ is a set of vertices by which the lattice $\mathbb L-C$ becomes disconnected. Consider the example below $\mathbb L=\...
10
votes
1answer
128 views

TreeForm outputs different results for the same inputs but why?

First of all, please look at the below inputs and outputs: ...
7
votes
3answers
103 views
6
votes
2answers
84 views

Association matching still not working perfectly?

Up until 10.4 you could not match on internal Association structure at all: http://mathematica.stackexchange.com/a/119542/6804 Now you can, but it seems flawed ...
5
votes
1answer
89 views

DSolve apparently returns wrong symbolic result

Bug introduced in 9.0 and persisting through 10.4.1 I am trying to get Mathematica to calculate the correct solution $x(t)$ of the following ODE: $\dot x = a x(t)+ct^n$ for $a>0$, $n\ge 1$, $c&...
9
votes
0answers
103 views

RegionPlot Failing on my System

I am running Mathematica 10.4.1.0 on a MacBook Pro OSX 10.11.5. I opened the documentation for TransformedRegion, went to this example in Scope, Formula Regions. When I open this particular ...
3
votes
1answer
55 views

Differentiation and series expansion of dot product - inconsistent results

If I differentiate a dot product, I get the result I expect D[a.b[x], x] (* a.b'[x] *) However, a series expansion of the same expression gives a very different ...
3
votes
1answer
268 views

The unexpected behavior of FindMinimumCostFlow?

Bugs(the fourth and fifth behavior) is present in V10.4.1 I'm at a loss to understand the behavior of the FindMinimumCostFlow function. Here are a few cases I ...
18
votes
1answer
264 views

The character sequence “\\. d” triggers line break in strings

Bug introduced in 7.0 or earlier and persists through 10.4.1 Bug isn't present in version 5.2 Update: Sjoerd pointed out that this happens with any string and it is not related to StringForm. Just ...
6
votes
1answer
100 views

ArrayPlot gives wrong plot legend, how to fix?

Bug introduced in 10.0 and persisting through 10.4.1 My minimal working example is the code ArrayPlot[{{1, 0.1, 0}, {0.1, 0, 0}}, PlotLegends -> Automatic] ...
2
votes
0answers
83 views

ListPolarPlot goes crazy when PolarAxes->True

Bug introduced in 9.0 and fixed in 9.0.1 I think I am experiencing the same/similar problems as this user. Mathematica Version: 9.0 for Mac OS X x86 (64-bit) (November 20, 2012) Computer: Mac OS ...
6
votes
0answers
51 views

TableDirections bug?

Bug introduced in 10.0 and persisting through 10.4.1 Here is the example in the TableDirections documentation: ...
8
votes
2answers
131 views

Bug in NDSolve/WhenEvent?

Bug introduced in v10. I'm fairly sure the following is a bug, and I would normally just report it to WRI. However, this is related to my answer to When using NDsolve, how to determine the ...
5
votes
2answers
95 views

How do I construct a Pattern with Alternatives and PatternSequence without getting Pattern::patvar messages?

Bug introduced 8.0 or earlier and persisting through 10.4.1 [CASE:3631078] In Mathematica 8 and 9, defining this rule: ...
7
votes
1answer
145 views

Plot3D producing wrong axis labels

This is some rather perplexing behaviour. If I try to specify labels for the axes of a 3D plot, sometimes they will go completely belly up: ...
5
votes
0answers
104 views

FindMaximumFlow generates a weird result

Bug introduced in 10.0 and persisting through 10.4.1 Try the following program: ...
3
votes
1answer
89 views

Help with GeoRegionValuePlot

I am trying to get a map with 4 colors, I have several regions with values from 0 to 3 and I want to color those regions with value 0 in white, with value 1 in yellow, with value 2 in orange and with ...
3
votes
1answer
57 views

Why does the Part::partw error appear when using DSolve?

I solved the following ordinary differential equation for $F(x)$ using DSolve in Mathematica $$ \begin{align} \begin{split} & A x^2 (x^2 + 1) F'''(x) - \left(3 A (b - 2) x^3 + a x^2 +A (b - 2)x +...
0
votes
2answers
183 views

Integrating SquareWave - don't understand result

Integrate[SquareWave[t], t] // InputForm Gives as output Piecewise[{{-t, Inequality[1/2, LessEqual, Mod[t, 1], Less, 1]}}, t] ...
4
votes
1answer
63 views

DateObject with DateFormat displays incorrectly in Dataset

DateObjects with DateFormat option appear to have the first date part truncated when displayed in a ...
6
votes
1answer
56 views

Notebooks created after prompting a Modal dialog

Bug reproduced in 10.3.1 and presisting through 10.4.1 From: Note: Modal dialogs will prevent users from accessing other notebooks in the front end while the ...
21
votes
0answers
183 views

Bug with MapAt, Span, and Association?

Bug introduced in 10.0 and persisting through 10.4.1 or later Related to Mapping (Query) a function at multiple locations in nested data via All, Span, it seems to me that the behavior of ...
10
votes
0answers
69 views

Issue with undo after copying a string inside a string

Bug introduced in 10.0 and persisting through 10.4.1 or later Here's a small but annoying issue related to undo and copying of strings. Steps required to get the problem: Type ...
8
votes
0answers
102 views

Why isn't ToElementMesh figuring out what my boundary is in 3D?

I am trying to change the element mesh for a FEA application I'm doing. I thought I understood it, when I did it in 2D. Here's my shape: ...
4
votes
1answer
104 views

Kernel crash after simple input of variable defintion

Fixed in 10.3.0 I have encountered a very surprising and annoying kernel crash: ...
7
votes
3answers
82 views

Kernel randomly aborting

Bug introduced in 10.0 and fixed in 10.3 So after 2 days of trying to figure out what's going on, I figure I should post here as I don't have enough knowledge about the Mathematica evaluation ...
9
votes
1answer
124 views

How useful is $EvaluationEnvironment?

Bug introduced in 10.0 and persisting through 10.4.1 A support case with the identification [CASE:3618534] was created. [...] I filed a report with our development team raising the issues [.....
11
votes
2answers
132 views

Why are some of the isomorphisms not bijective?

Bug introduced in 10.4 Mathematica computes all the isomorphisms between graph g1 and g2: ...
8
votes
1answer
141 views

Symbolic and numeric limit disagreeing on branch cut of ArcTan

Bug introduced after v8.0.4 and before v9.0.1, and persisting through v10.4.1. Investigating comments to my previous question lead me to the following problem: ...
5
votes
1answer
73 views

FunctionInterpolation produces many error messages when given high-precision input [duplicate]

Both FunctionInterpolation[1, {x, 0,1.00000000000000004}] and FunctionInterpolation[1.00000000000000004, {x, 0, 1}]; ...
8
votes
2answers
159 views

Integrate and NIntegrate disagreeing over branch cut of Sqrt?

Bug introduced after v8.0.4 and before v9.0.1, and persisting through v10.4.1. In Mathematica 10.2 I'm trying to integrate this piecewise continuous function, but ...
9
votes
1answer
129 views

ArrayPlot with a user-defined color function is misbehaving

Bug introduced in 10.0 and persisting through 10.4.1 or later I am using ArrayPlot to show some arrays with values from 0 to 1. I want 0 to be black and 1 to be ...
9
votes
1answer
165 views

Wrong limit: Limit[(1 + (-1)^n/n)^n, n -> Infinity]=1 (Mathematica 10.4 and W-Alpha)

Since $(1-\frac{1}{n})^n\to 1/e$ and $(1+1/n)^n\to e$, the sequence $(1+\frac{(-1)^n}{n})^n$ has no limit as $n\to\infty$, but has limits for odds and even numbers. If $n$ were taken to be real, there ...
10
votes
1answer
252 views

Vastly incorrect answers obtained by increasing WorkingPrecision with modified Bessel functions

Bug introduced in 7.0 or earlier and persisting through 10.4.1 This is a follow-up to this question regarding numerical instabilities occurring with modified Bessel functions. In trying to explore J....
5
votes
0answers
67 views

Cannot reproduce VectorDensityPlot solution from question 37459

Bug introduced in 10.0 or earlier and persisting through 10.4.1 or later (Reported to Wolfram Technical Support on 24 May 16) Using Mathematica 10.4.1 for Microsoft Windows (64-bit) (April 11, 2016),...
10
votes
1answer
151 views

Something wrong when I apply Derivative on a SparseArray

Bug introduced in v5.0 or earlier, and persisting through v10.4.1. There, I create a SparseArray using command ...
4
votes
1answer
71 views

Plot option Filling conflicts with option PlotLabels

The regulars here discuss approaches to numerically unstable systems of higher-order PDEs, and I cannot even paint by numbers … (sigh) A Plot[] of simple curves with ...
8
votes
2answers
111 views

Why a function returns two different values if copied into a Notebook or imported with Get from a Wolfram Mathematica Package?

I have some Mathematica code that shows a behaviour I really cannot understand. The code only contains a bunch of function definitions. If I paste it in the Notebook Front End and I evaluate it, I ...
3
votes
1answer
99 views

NDSolve DAE solution order is mixed up

Bug in 10.4.0.0, probably introduced earlier. Compare the two solution sets below: in the first one (x == False), there are only 3 dependent variables while in ...
9
votes
2answers
161 views

HighlightGraph Problem

Bug introduced in 9.0 or earlier and persisting through 10.4.1 HighlightGraph does not work. ...
5
votes
0answers
123 views

Same input,different result? [duplicate]

Using this code,you can see,same input, but the output are different. So weird! If I copy this code here, it outputs normally. So what's the problem? Ps:I use ...
3
votes
1answer
84 views

Mathematica hang on a Manipulate expression

Manipulate[Plot[Erfc[x/(2 Sqrt[t])], {x, -5, 5}], {t, 0.1, 5}] With a fresh kernel, after evaluating this, Mathematica will hang immediately if I try to drag the ...
2
votes
1answer
44 views

Limit Relief plot output to specified X and y range

I have a table of values and I'd like to use ReliefPlot to visualise. Is it possible through the plot command to limit the $x,y$ range displayed? The help suggests ...
13
votes
1answer
116 views

Empty WhenEvent action crashes kernel

Bug introduced in 9.0 and persisting through 10.4.1 WhenEvent is new in 9.0. This is an example from the docs, slightly modified (action is wrapped in ...