When a settler is hauling debris to a dump, delete the dump without recruiting them to cancel their job. They will path to where they were heading before the dump area was deleted, freeze in place, and if you click on them the UI will lock entirely. The game will continue to run, forcing a reload.
Saving and reloading will NOT cause the colonist's behavior to change. The anomalous UI freezing will happen when one of them is selected, but not multiple.
Arresting the anomalous colonists seems to be a workable solution for now. Once they are deposited into their cell their status will shift to Prisoner and their stats are viewable again.
Edit: Re-converting the arrested colonists seems to get rid of the weird freezing.
Sounds like a real bug. Can others repro/report in Mantis?
If nobody picks it up i will when i get back home from work.
I've had no luck with reproducing so far in v254b. They will just drop what they're hauling and switch to another task. Any additional info available?
I haven't been able to reproduce this aswell.
Do you still have that savegame where the goon is stuck?