While recently playing a game I encountered a bug which was fairly major if purposely exploited, I created a Sova Carrier and built 2 fighters with it, then jumped to another planet(Asteroid).  During the battle I canceled one of the third-built squadrons and ordered a bomber.  At this time the bug ocurred and the canceled fighter squadron continued to build and I had a level 1 Sova with 3 squadrons!  In this incarnation, the bug is relatively minor,however if exploited...

Issue is old and already known...