2 critical bugs

First bug: During the story phase, players can infinitely build temple rooms in Holton, roughly between levels 63 and 72.

Second bug: Atziri's Impatience allows the Flash Armor to teleport infinitely, and the negative effects of this support gem appear to be unimplemented.
The first bug severely undermines the game's economy.

Finally, as a player who's stuck with this game through four seasons, I must say: the multiplayer team rewards have ruined this game. Patch 0.4 is terrible. Here's hoping next season is better.