Thank you so much for bringing this to our attention!

We have completely overhauled the video scaling engine in version 1.3 specifically to fix this issue. Rotated videos on both YouTube (including standard view, Theater Mode, Shorts, and Fullscreen) and Invidious now dynamically scale to match the player container with zero clipping.

We also moved the on-video button to the top-left with auto-hide and added a right-click context menu so you can rotate without opening the popup.

Please update to v1.3 once it’s live and let us know how it works for you.