Screen within a Screen - MacApp

Honestly, not a huge deal, just a front end bug, but it was a little interesting – while working with GPT 4.5 it seems to have opened another window within the current window, so now I have two side bars, one that is the web version, and one that the Mac version. For clarity, the web version is the innermost.

Is it common? It’s no issue, just found it interesting

Forgive my very simplistic approach to ensuring I’m not sharing any personal data