PlanetsCentral

Your problem obviously is linked to fighters - especially free fighters at bases maybe or maybe not including some script to undo turnstuff at a place. So since you said there is nothing to worry about concerning spoilers...

JFTR: "free fighters" alone is too simple as an explanation. Free fighters are no different from a client's point-of-view than fighters you bought last turn or fighters which someone dumped on your planet. The client never sees a turn with "before" and "after free fighters".

There must be something in addition.

I hope I'm not telling an embarassing secret by saying that Allan seems to use VPA. VPA doesn't have a reputation of breaking turns. (But if you have a hint what the problem is, I might try to fix it.)

--Stefan