HiDPi monitor scale problem Qt/Linux

[skygunner]

This issue is unique.

• I have used the search tool and did not find an issue describing my bug.

Operating System

Linux (DEB package)

Version information

8.2.2-1

Expected Behavior

Hi, just installed only office on MATE desktop environment. I have the 4k monitor, have set 200% scale in display settings and everything else seems to scale properly. However ONLYOFFICE seems to only scale the base board but not the actual editing UI?

I have those in .profile

export QT_AUTO_SCREEN_SCALE_FACTOR=1
export QT_ENABLE_HIGHDPI_SCALING=1
export QT_SCALE_FACTOR=2
export QT_QPA_PLATFORMTHEME=qt5ct

in .Xresources

Xft.dpi: 192

in .xsessionrc

GTK-3 Scaling

GDK_SCALE=2 export GDK_SCALE
GDK_DPI_SCALE=0.5 export GDK_DPI_SCALE

$ Qt5 Scaling
export QT_AUTO_SCREEN_SCALE_FACTOR=1
export QT_SCREEN_SCALE_FACTOR=2.0
export QT_SCALE_FACTOR=2.0

Actual Behavior

have set the interface scaling to be 200% in onlyoffice

Reproduction Steps

No response

Additional information

My monitor is 4K screen.

[DerBrunoIR]

I got the same problem.
That's my hack for my flatpak installation:

After that the working area is normal again.
Somehow the 200% scaling is still applied.
Note: My ~./Xresources dpi is not changed.
Instead is use xrandr --dpi 200 on startup.

However if I want to open a file, the file manager is only at 100% scale...
Could be a flatpak issue though.

[skygunner]

for me set GDK_SCALE=1 and use xrandr to scale can often cause the fonts blurred out on the screen