I even recorded a video and posted it on youtube with the issue, opened a tiket and the gm marked it as “resolved” while saying that he has no clue how to fix it and copy pasted some general stuff I already did.
This is the video: https://www.youtube.com/watch?v=mcy0_ImM63s
I have no addons installed, no curse app, I deleted and renamed the cache, interface, wtf. Nothing.
Arena is unplayable right now without frames. It seems they implemented a new UI without understanding it very well since it was a bug show in arena since implementation with other problems also like randomly showing or not showing the frames inside arena (since shadowlands prepatch)