Bug one of several:  I had a tiny fleet of mine disappear from view once.  I unfortunately did not think to take a screen shot of it ( I think this is the only bug in which I failed to take a screenshot).

Details of the situation:  The fleet was adjacent to an enemy planet (it had just blown up all the ships next to the planet, because why not).  My transport which took the planet came through the same hex that the fleet was in.  I don't know if the fleet disappeared when i launched that attack (and all the boxes popped up), or immediately afterwards, but after I had finished going through the boxes from attacking a planet, I noticed my fleet was gone.  I scrolled out and it didn't appear in the "icon map"  (what is the proper name for the scrolled out map?  This isn't Elemental, it's not made from cloth).  When I clicked on the square that I knew it was in it reappeared.