For the entirety of macOS 13.0 Ventura, my LG ultrawide 5k monitor (connected over Thunderbolt 3) just straight up did not work. Didn't turn on a single pixel. Saw no signal from my Mac. Assumed it was broken.

Updated to 13.1 last night and came in this morning and it the display was on. I'd forgotten about it. Weird.

Thunderbolt is a hell of a drug.