Only happens the very first time you select them after they start their reload. I have managed to produce it on other animations/units, and one time just plain selecting any character would interrupt any combat action they were doing and cancel everything, including recovery - but I was not recording when I managed to do that.

This could possibly be related to this - which I understand has already been fixed internally.

bumping for visibility

Wow this is actually worse than I thought. If you select a character towards the end of their attack animation, it cancels their animation backswing and causes them to not go into recovery. This may have already been fixed internally though because BMac said that when you select a character in v392, it loads their inventory/character sheet and causes a micro-stutter which may be causing the problem .. not sure.