Both games I've tried so far my commander has detonated like a nuke killing everything around it after completion of it's third task. It's honestly been quite amusing, though not very practical.
That's... odd You may need to ask Uber to check your replay files for the cause of that one... did you push the "delete" key by chance?
I just experienced that same bug too. built a mass extractor built a energy generator built a land facotry instant crash. (mine did not blow up, just client CTD :/ )
Throw it in the pile http://pa.lennardf1989.com/Tracker/ If you can reproduce it reliably that would be great!