Hey!
Thanks for the replies, but I’ve since moved over to GNU/Linux. I could not stand Windows anymore.
Anyways, the pen rotation works now but there is a different issue of pen pressure stepping now like what this user experienced.
Like him I came to the same conclusions. I am using KDE Plasma, it happens only in Krita (I tested drawpile and magma and it worked there flawlessly) and only with that pen.