Earlier quoted context omitted.
Seems to just be a memory leak in a framework the editor is using, that seems to only affect M1. Which is mildly interesting but a bit of an anticlimax...
The framework is part of Apple’s UI stack and indicates a window system/graphics driver bug somewhere in macOS. So it’s probably more than just “an application has a bug”, but still not very interesting until we learn more.
The title doesn't make it clear individually opening 730 frames in an the editor is the userspace action exposing an underlying system bug