My home directory was unexpectedly full, so I went hunting for large files, and found a bunch of OBS recordings I didn't remember making. Upon investigation, they were all just of the OBS interface itself faithfully ticking up the "time recorded" counter, the longest of which was a 10-hour overnight extravaganza taking up several gigs.
I *had* recently set up keyboard shortcuts to start/stop recording, but I was still unsure how I had been accidentally hitting Ctrl+[ a bunch.
Fast forward to today, and it dawned on me as I went to search backwards in a tmux buffer that if I was a little too hasty with Ctrl-a [, I imagine it would look an awful lot like a Ctrl+[ to OBS 😆😅
It's either that, or I left OBS up and my cat kept stepping on the living room keyboard 🤷