Comment # 17 on bug 1202837 from Atri Bhattacharya

(In reply to C J from comment #16)
> (In reply to C J from comment #15)
> > (In reply to Atri Bhattacharya from comment #14)
> > > Therefore, this is not a GNOME bug, re-assigning to YaST devs.
> > 
> > Why only YaST ?
> > 
> > This fixes the problem of all QT5 & QT6 apps (not only yast) on Gnome + X11
> > + hidpi (4k) screens.
> > 
> > Thanks.
> 
> To add some more info:
> 
> Other QT apps, like i.ex chessx also have the same problem yast has.
> 
> (But some apps, like i.ex QT apps built with lazarus don't have the problem).

Individual apps have to decide whether to use passthrough by default or not,
which may still be over-ruled by an env variable set by the __user__ if they
want. Setting a catch-all env variable would be rather ungainly.

I think the right way to go about this is to report scaling problems with other
apps to the respective upstream and request them to use the passthrough setting
or just plain switch to Qt6.