
Watching the replay, by selecting and holding shift i can see unit orders. Notice the units actually have attack orders on the allied units, something i couldn't even place on purpose. Some of green's levelers tanks started fighting back at this point, on their own i think. Notice their shots don't get affected by the shield, but they are shooting me.

Here i have noticed something was very wrong (ingame) and ordered my tanks to move:

But the order is canceled on its own after just a couple seconds and they are engaging the levelers again, that keep shooting back. The moho there is an exploiter, and its not engaging the levelers either.

In game i was kinda baffled and i let them sort it out amongst themselves, since ordering them back wasn't working:

After those few units involved died or got tired, everything went back to normal.

Here is the replay:
bugreplay.sdf
If you watch it, make sure to watch the end, with 2 Kroggies 1 Commander.