Glitch on IPhone 15 Video when zooming out

It has already happened to me more than once that I record a video where I zoom out from 1x to 0.5x and it seems fine, but after checking the video in my gallery, it is glitched.

By glitched, I mean: On the moment I zoom out, the actual video goes to the upper right corner, covering about 25% of the screen. On the rest of the screen, I see the full size video (with the smaller video covering the right upper part), and this big video glitches and sometimes shows a green screen. It is hard to explain but I can upload an example of the issue.

The weirdest thing is this has happened two times when I went to karaoke.