First off, it's not clear what the "correct behaviour" is, or at least I've seen no "official" response answering the question... which is:
When derelict ships are repaired - who claims ownership?
In vanilla DW and 1.502, I'm pretty sure whomever had the biggest, baddest ships in the area (undefined what that meant - system?) ended up with the ships. So, if you're busily cleaning up a debris field, you'd better put some heavy hitters there to make sure that the work you put into repairing the ships doesn't simply go towards arming whomever happens to send a spare fleet there. Annoying, but that's the way it seemed to work.
1.505 - and I suspected this in 1.504 but wasn't really looking for it... the behaviour is different. It seems that firepower is rather ignored - if you're the one that's repairing a derelict, you generally end up with it... generally.
My last night's insomnia entertainment saw a capital ship blink over to another race's colour for no explicable reason - I had repaired it, I dominated the debris field (a swarm of capital ships) - yet somehow I saw it flying off with the colours of another race. What gives? Individual and/or cumulative firepower doesn't seem to count any more.
As well, I ended up claiming a destroyer repaired by someone else (rather crappy trade if you ask me) - which was locked on auto and unable to move till the AI re-tasked the offending construction ship.
So, my issue is this:
The criteria for claiming derelict ships has changed - but without (as far as I can tell) any release note documentation.
Anyone else experience this?