Hi,
after upgrade to qt 5.15.2 painting insets in stable branch has a small glitch,
see the attached picture (the horizontal line on the bottom ref).
It affects all insets, but only on certain scrolling positions - it paints ok
in the top half of workarea and wrongly in the bottom half... weird. It seems
to be robust wrt zoom levels. ToC inset has vertical line no matter what
scrolling
position you are at.
git bisect points to:
commit 8b6460e4f2d4040e3df41ef0abc70cbbe14ad875
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date: Thu Feb 25 17:56:11 2021 +0100
Improve HiDpi handling
Add code stolen from QBitTorrent and Qt Creator that properly enables
HighDpi handling.
The rules are:
1/ nothing needs to be done for macOS and Qt >= 6
2/ HighDpi support is set by default starting with Qt 5.6.
3/ Support for fractional scaling is added for Qt >= 5.14.
Hopefully fixes bug #12060.
(cherry picked from commit d7a4f47e7d42af33858ff263823bd7cdbea98b57)
(cherry picked from commit f92f2f95ffd5f0d9d9704c9d7f67e4a9e74db0f6)
Although backported I do not see the same problem in master...
Pavel
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