When entering fullscreen on any video Orion has small flaws compared to Safari that makes the animation a bit more nauseating
Steps to reproduce:
Make video full screen
Expected behavior:
To work like Safari
Orion:
Orion has a white bar that only disapears in the end making the video frame jump a bit:


Safari:
Both animation are pretty laggy on my computer and overly complex IMO. the background window moves left really fast while the video expands, but Orions has more flaws. will make a seperate suggestion to instead maybe replace the animation with Firefox style animation
Orion, OS version; hardware type:
Version 0.99.123.3-beta (WebKit 615.1.16.1), Monterey