[Interest] Qt 5.15, PySide2, QWidgets not refreshing on Change

Sérgio Martins sergio.martins at kdab.com
Wed Jun 30 18:05:13 CEST 2021

On 2021-06-30 16:43, Michael Jackson wrote:
> Replying to my own question (actually, not sure my first message made
> it to the list), a helpful colleague found the following:
> https://forum.qt.io/topic/98059/push-button-label-settext-not-refreshing-under-macos
> which leads to https://bugreports.qt.io/browse/QTBUG-68740 and
> https://bugreports.qt.io/browse/QTBUG-68521. I have a small test
> project that shows that those bugs are back with Qt 5.15.2 and 5.13.
> Should I reopen the bug(s), start a new bug? I figure there is no hope
> of getting them fixed with the current emphasis on Qt 6 but at least
> if someone else experiences this issue then it might be nice to have
> the issue documented.

Can you reproduce with the oldtestcase attached to QTBUG-68740 ?
If yes then it's the same bug and it should be reopened.

If only your new testcase can repro then it's a new bug. You reference 
the old bug in case there's any good insights.

I would also test with Qt6, as any fix should go there first.

> I was able to reproduce the issue on macOS 10.14 and 10.15 but not
> macOS 11 (Big Sur) and Windows 10. All were running the same conda
> virtual environment. Same in the sense that the same commands were use
> to generate each environment on each respective system.

Sérgio Martins | sergio.martins at kdab.com | Senior Software Engineer
Klarälvdalens Datakonsult AB, a KDAB Group company
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