I looked through the log files and I found the culprit - I had "Disable visual themes" and "Disable desktop composition" (desktop composition had no effect on this when enabled again) in the compatibility tab in the file properties of arma3.exe and arma3launcher.exe files (for increased performance - no Win Aero), but it's still weird, because I'm pretty sure that it really shouldn't cause this. When I enabled it again, mod selection started to work. I'll update the steps to reproduce to match. Thanks a ton, you guys are the best!

I can still paste the log files in case you want to read them.

Hello,

Thank you for replying. I'm not exactly sure how the feedback system works, I hope you'll see my message here, because I don't know how to send a PM.

The workaround worked perfectly, thank you so much. This has made my experience unimaginably easier haha!

The application, however, did not. I made a separate folder, into which i extracted the .zip, however after starting I only see the windows spinning circle and the process (not as an application, only a process) is visible in the task manager, but it closes itself after a few seconds. Maybe it's related to the problem? If you need any log files from me, or anything, let me know, I'll be happy to help.