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Mathemtaica correctly computes the following definite integral:

Integrate[(q Log[q]^3)/(1 - q), {q, 0, 1}]    
(* Out: 6 - \[Pi]^4/15*)

But, when I change the denominator a little bit:

Integrate[(q Log[q]^3)/(-1 + q), {q, 0, 1}]    
(* Out: 0*)

The output is idetically zero, which is obviously incorrect. Why? (I am using Mathematica 12.1.)

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    $\begingroup$ Mathematica 12.2 : !Mathematica graphics $\endgroup$
    – Nasser
    Feb 6, 2021 at 15:22
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    $\begingroup$ This worked in 11.3 and 12.1; did you try this on a fresh kernel? $\endgroup$
    – J. M.'s eventual burnout ♦
    Feb 6, 2021 at 15:24
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    $\begingroup$ I have also verified the results that @Nasser provided in the previous comment. My version is 12.0.0 for Linux x86 (64-bit) $\endgroup$
    – user49048
    Feb 6, 2021 at 15:55
  • $\begingroup$ BTSI? (Bug That Squished Itself) $\endgroup$
    – Daniel Lichtblau
    Feb 6, 2021 at 16:23
  • $\begingroup$ Works for Version 12.1 on Windows $\endgroup$
    – Daniel Huber
    Feb 6, 2021 at 19:34

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