More testing: Seems to happen when I sub to communities on other instances, not my home server Lemmy.world.
If it matters: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0
I'm doing further testing and it keeps happening. I keep my post open in a tab and subscribe to communities in another tab and each time I do the tab with my post updates to whatever community I just subbed to.
Page updated itself to show incorrect community
https://lemmy.world/post/123456
The best [citation needed] ever
https://lemmy.world/post/122865
YouTube tests blocking videos unless you disable ad blockers
https://lemmy.world/post/109143
YouTube tests blocking videos unless you disable ad blockers - Lemmy.world
YouTube tests blocking videos unless you disable ad blockers
https://lemmy.world/post/109141
YouTube tests blocking videos unless you disable ad blockers - Lemmy.world