Created attachment 182717 [details]
How it looks like on the big screen

Setup:
- 14inch laptop, resolution: 2880x1800, 150% scale. This is the primary screen.
- ultrawide screen, resolution: 2580x1080, 100% scale.
- using wayland.

Opening libreoffice calc (or writer, or impress) onto the external screen creates HUGE icons. They seem to be 2x in every direction as he original icons should be (compared to Mozilla Firefox icons). Moving all the window to the notebook screen scales the window and icons/buttons to their expected size. Interesting to see, that the switch between the "normal" and "toobig" size happens when the windows is fully moved to either of the screens. Moving it only partially retains the "size" from the previous screen.

STEPS TO REPRODUCE
1. Two screen with different scale on wayland (I guess these are the trigger points)
2. Open LibreOffice Calc (it happens with Writer or Impress as well)

OBSERVED RESULT
Bad scale on the external screen, with 100% scale factor opposed to the original scale with 150% scale factor. Talking about good vs bad scale is based on comparison of the buttons/icons inside the window to icons/buttons in other apps on the same screen.

I opened this issue: https://bugs.kde.org/show_bug.cgi?id=459736 where Nate said it seems like a libreoffice issue.

LibreOffice version: 7.3.6-2

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.19.9-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-11370H @ 3.30GHz
Memory: 15,4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: TUXEDO
Product Name: TUXEDO InfinityBook Pro 14 Gen6