Received by email today. I'm adding a bug report for discussion:

��� I write to you because you changed the last revisions here:
https://build.opensuse.org/package/revisions/KDE:Qt:5.15/libqt5-qtbase.

To fix the issue described here: https://bugreports.qt.io/browse/QTBUG-109030 
I would like to create a patch for the libqt5-qtbase package. I have a rough
Idea how to use osc and how to create a patch with it. But I have absolutely no
Idea to which of the many libqt5-qtbase packages found in build.opensuse.org I
should apply this patch to. My goal would be that the patch appears at some
point in the future in SLES15-SP4. ���