You have to pick up one of the workers and move it elsewhere. I had that bug and seems Tukyuk was the issue in my case. Was trying to get something done which he could not reach and would get all AI freeze. Moving him allowed me to unfreeze him and the menu would appear again.

引用自 -=SaRuMaN=-：

You have to pick up one of the workers and move it elsewhere. I had that bug and seems Tukyuk was the issue in my case. Was trying to get something done which he could not reach and would get all AI freeze. Moving him allowed me to unfreeze him and the menu would appear again.

Thank you so much! I'll try that next time!