This is a Linux Mint issue. The Alt+click combination is bound to "move window".
The solution listed at the end:
Go to Menu.
Select Preferences.
Navigate to the Windows section.
Click on the Behavior tab.
Locate the option for 'Special Key to move and resize windows.'
Set it to 'Disabled' (or any other preference you'd like).
I'm looking everywhere I can. I haven't found any OS that works with my current phone (Nokia G42), and the aren't too many phones that meet my needs (dual Sim, small, headphone jack, repairable, runs open source OS).
I've given up actively searching and I'm mostly browsing Lemmy and hoping to stumble across something useful. Please let me know if you have any more suggestions.