I just experienced a strange bug. The game (Full map, Attenuation, 6 players, no bonuses, user generated map) started normally. after only three players were left, the whole thing started acting strangely. Suddenly I could not attack, (I sometimes experience clicks not being recorded, this was different) and within seconds it was another players turn. No armies were distributed for me in these broken rounds. If I pressed end turn within 2-3 seconds after my turn started I could distribute armies or they were distributed automatically after about 2 seconds (the green bar was still filled as far as I remember)
My internet connection was stable during this time and sufficient bandwidth availible.
addendum:
The game still shows up grey in the game list, although it ended 15 minutes ago.