Winaero Tweaker is an app that allows for easy application of various hacks for Windows - where previously it would've taken manually changing settings or editing the registry it's now a click of a button.
One of the tweaks it offers is changing the default system font:
When I do that, however, I found that the start menu becomes glitchy - the things I've discovered include pinned folders not working and the search bar in the start menu not working either. I noticed that changing the fonts elsewhere (as seen in the sidebar) works fine (i.e., I've yet to find system-breaking glitches as with the system font), though.
I don't expect any official support out of this hack of course but it would be nice to know what is going on and if it's possible to fix.
Thank you for your time.