The bouncing borders (moving buttons all over the place) is a VERY serious issue...
You need to set static areas for inventory to fix it. (Set X values, as opposed to likely % based ones)
Edit: found it, will get it fixed today
Could you be more specific about what the issue is? I don't quite understand what you mean. Also, I'm only using % based values for the progress bars, everything else, like the inventory is already static. (It has a min-width value of 338px for example). Thanks for the feedback though, I appreciate it. Wasn't expecting this much attention so early 😅