Demonform + Siren Electroswarm cosmetic crash in Deshar

Found a bug that crashes the game when you use the Demon Form spell while also having the cosmetic effect Siren Electroswarm equipped (at least while in the starting area of the Deshar Map in Act II) Upon transforming, you are able to move for maybe 1-2 seconds before the game crashes.

When at the character selection screen after the crash and logging back in, it'll show the character in the demonform transformation. Rejoining the world will have the character still transformed and floating in frozen animation until the game crashes a few seconds later. If you exit out of demonform within the short timeframe, the game will still crash, however after restarting and rejoining the session you can proceed and play as normal. Re-activating demonform causes the game to crash again if you still have the Siren Electroswarm cosmetic equipped. If you don't have that specific cosmetic equipped you can use the ability/transformation without issues.

I have singled this out by removing all skill gems, all cosmetics, and one by one re-adding the cosmetics until the crash occurs. Siren Electroswarm is the only one that will crash the game, both if it is the only cosmetic equipped or if it is equipped with any other cosmetic items.

While I unfortunately don't have a any error logs to add, hopefully these details can help find the bug causing the issue.


My setup is a Ryzen 7 3700x 8-core, 32 GB DDR4 RAM, GTX 2080, and Windows 11.