Things not being repaired even though the beam shows up

[Traveller]

This happened to me a few games ago, I can dig up the save if there isn't an obvious solution.  I had ample power and metal, a fleet of normal repairable ships, and a minifortress that hadn't moved in a while.  Bring the ships over to the minifortress and the healing beams appear, but no metal is spent and no damage is repaired.  Persisted after reloading a save.

Anyone seen that before?

[zoutzakje]

yes I have seen that before. Doesn't seem to happen often but enough to notice. I don't use miniforts but I've seen it with engineers. I believe it's a bug and it's been around for quite some time. I believe it came with the release of an expansion. Either vengeance of the machine or maybe even ancient shadows, I'm not sure.
By now, I can usually determine if something is part of the game or a bug. I can find no logical explanation for this behaviour whatsoever so a bug it must be. An annoying one at that too. I suggest you make a mantis report if there isn't one already.