Please specify where, I am sure it can be explained. Remember, the curious fightings in the bugged turn caused a lot of my fleets to halt due to one or more disabled ship unable to move. Now the fleets wiped away the lone attacking cruisers without suffering any adverse effects and were able to move on as planned.
Edit to answer the edit
:
We can return to no treaty without problems if you wish. Ships and mines behave the same during war or no treaty, so apart from the diplomatic effect - which can be remedied - there is no difference.
Yes, cloaked ships do not attack. But in the nebula, I had not cloaked my ships (the earth2000 captured cruiser design can't cloak anyway), because I intended to be able to fight if I was attacked.
So what kept us from fighting were your missing sensors that did not enable you to see my ships even if they were uncloaked, so you did not initiate combat. Now my ships also check for initiating combat where not cloaked, and my sensors not being missing
combat happend as it would have before if my ships had not been bugged.