Max number of units reached

[Slax]

I don't know if this is a bug or what. I played one complete game on the easiest level, then tried two games 2 levels up. Each of those higher difficulty games ended with "too many units" errors. In both cases it was very early in the game, and I had only a few (like 10 or so) units. I can't see how the unit maximum could have been reached.

Any known issue regarding this?