v5.2 user interface and font in super-scale after upgrading f39 to f40

[nixuser58]

I updated a Fedora 39 system with a 4K monitor to Fedora 40 and the megasync user interface is now at something like 4 x normal scale (with massive fonts also).

Other QT5 applications (VirtualBox, KeepassXC, BCompare and others) are all scaling correctly. I have qt5ct installed and set to a font size of 10. Importantly, while the screen is 4K it is so massive you don't need to scale things up for it. Maybe megasync is trying to be too clever and compensating for a small 4K laptop screen? In any event it is ignoring QT5 settings.

I've tried deleting the ~/.local/share/data/Mega Limited/ directory and staring again but same results.

Where is it getting it's information from? I cannot swear this issue didn't happen before the f39 to f40 upgrade because I cannot recall the last time I opened megasync. It is possible the megasync update to v5.2 did it.

[nixuser58]

After some digging it looks like this was reported before:

#275

For me the fix was to edit the Exec line in the desktop launcher to:

Exec=env QT_SCALE_FACTOR=1 megasync