I found an issue with wordwrap QLabel on hidpi on two monitors with different scale factors.
I create a fixed size QWidget, and a wordwrap QLabel, then put QLabel into layout of the QWidget, when I move the QWidget from a monitor to another, the QWidget is not under my mouse cursor so it's hard to move the QWidget from one monitor to another. See attachments mytest.mp4.
Here is a short example to reproduce the bug: qtbug90460.zip
My win10 version is 20H2 (19042.746) winver.png.