I am seeing an issue between this extension and 5e exhausted. I do not know where the issue would be manifested or fixed. I am playing legacy 5e (2014 rules) exhaustion rules. When a character reaches level 4 exhaustion specifically, it half's their HP. When a character is at level 4 ex and comes into contact with a PC that has an aura, their HP resets to the max of their 1/2 HP status.
To clarify, Character A has 90 HP and is at Ex level 4 and is capped at 45 hp. The are damaged, so their HP are 20. If they come into contact with an "aura" from another PC (not HP related at all) they are immediately reset to 45 HP every time.

