It has only happen a few times to me so far, in the description below it will say "there's nothing to build or repair" iirc

All I could do was wait till it went away again, it only happened when I did a lot of spam repairing. It becomes glitched then. Usually went away after 5-10 minutes for whatever reason, restarting def didn't help indeed, weirdly enough.

I'm trying to recall if I found a way to fix it quicker, I think so but no idea anymore, been a while since I had it.