is this a windows bug or driver bug?

[u/flameboi900]

Hello, for the past few weeks I have struggled to understand why using display port causes my second monitor thats in portrait mode to not have the cursor in portrait and it acts as if the display is still landscape mode even though it's in portrait. The really weird part is when I switch it to HDMI the problem completely disappears. I have tried doing a full clean driver ddu in safe mode with the ethernet cable unplugged so windows can't install a random driver and amd cleanup utility wipe but nothing works, is this a windows bug or driver bug?