I recently discovered that since the big black dahlia update my fully maxed space case umbrella only recieves 1 debuff of the opponent's element but the special skill description says that I should get 3 stacks. I posted in one of the channels in-game and someone replied that he/she tried it and it still gives the 3 stacks that it should. Since then whenever I play Space Case I only get 1 stack of buff and 3 stacks of precision whenever I defeat an opponent.