This has been a recurring issue for me in several trial chamber structures. I did notice that it is only the mobs' weapons and armor that are effected. Mobs that only increase in number during the ominous trials, such as breezes, spiders, or slimes, will spawn the correct amount for a normal trial, even after an ominous trial has taken place. The issue is just with the weapons and armor of zombies, skeletons, etc. who retain the ominous trial's buffed armor after the ominous trial is over.
Ryan Fair
This has been a recurring issue for me in several trial chamber structures. I did notice that it is only the mobs' weapons and armor that are effected. Mobs that only increase in number during the ominous trials, such as breezes, spiders, or slimes, will spawn the correct amount for a normal trial, even after an ominous trial has taken place. The issue is just with the weapons and armor of zombies, skeletons, etc. who retain the ominous trial's buffed armor after the ominous trial is over.