I noticed while playing the new update that sometimes there would be random bits of dust floating around in unpowered rooms after waves. I figured out that t was probably the new kamikaze enemies insta-popping upon spawn when the dust appeared in a room with an artifact that wasn't being used and it received damage. Obviously this is impossible to confirm from player perspective but I am fairly certain of the cause, the dust only appears in rooms where the spawns originated.

Hello!



This one will be fixed in the next update,



Thank you for your report!