Context: got a 50% XP booster for ~15-17h, started tuning my squads in various campaigns, checked available lone fighter custom game lobbies (all were mad mix of all factions as usual), bought an assaulter II in Stalingrad, and somewhere along the way the booster just disappeared from the “Start” icon.
Restarted the game, an update message popped up (version with changes to Stalingrad MG stamina) - maybe that was the reason for the bug?
Maybe only the “+50%” text disappeared but the booster itself would have been applied, but didn’t test.
So yeah, uncool.