"New window" in a fullscreen mode makes a slideshow

Please see the screen recording attached. The transition is ugly, slideshow-like.

expected it not to

0.99.126-3

Monterey (12)

Haarolean Can you compare this with Safari?

Vlad yeah I have checked this in safari, it's pretty smooth there.

Haarolean Can you show a recording as I tried and it was not smooth as all?

Vlad sure:

as you can see there's no glitch like this: