I’m glad it’s not just me, I also had a thread going about this: Spontaneous and ungraceful restarts upon closing the lid
Since Arch Linux LTS updated to 6.12 last week, I have been seeing this issue too. Also see it with zen and stable.
What slot are y’all running the HDMI card in? Mine has been in the front right slot (USB 3.2/DP). Considering swapping my rear right USB-C with it and see if that helps, but I’m really not hopeful.
If I can find the time, I would love to try James’ patch.