I have a common pattern with DWU. I start playing, I get to mid-game-ish where I have several colonies, a positive cashflow, a few wonders, and then, something happens and I just give up until I try again a few months later.
This time, it's my constructor.
I found one of the "death star" ships... the "World Destroyer". It had some other races working on it, which would not do. After some effort to build ships with the range to reach it, I set out a constructor and a fleet to escort it. I scared off the other constructors and order mine to repair the ship.
It instantly turned and fled to the nearest colony, several sectors away. My guardian fleet followed it.
I maneuvered other constructors into the area and kept a few military ships to fight off other races' constructors, earning nasty messages from them. I could order any of the constructors to repair any of the other ruined ships in the region, but as soon as I gave them the order to repair the "world destroyer", they ran.
This is annoying, to say the least.
The target ship is listed as having only a single damaged component, so the next race to succesfully repair it will have a powerful advantage. Bad enough some "legendary pirates" just spawned and wiped out one of my colony's defensive based like it was a sublight escort.
I'm using the latest DWU, with Starfall 1.12 Fixed.