btw i use Arch, i use it because i found lot less effort it takes to do anything and it's stable, i do think there is some bug with QTcreator, gotta see it's os issue or QT issue.
Searching this titles in protonDb gives the result if it's native, can it run, what settings it needs are given. i think linux mint should be fine, i personally use Arch. Have fun.
btw i use Arch, i use it because i found lot less effort it takes to do anything and it's stable, i do think there is some bug with QTcreator, gotta see it's os issue or QT issue.