[Tristam]

It seems like the freezing debuff is fine. The healing cut is restored once it wears off. Same with bleeding.

Overheat altough, when it wears off, it applies again healing reduction. Which makes it permanent until relogging.

https://imgur.com/z7Pcba7

EDIT:

Poison is not okay either

https://imgur.com/YwGoyO0

EDIT 2 : It seems like applying an effect above a current similar effect seems to apply another stack of heal reduction, while the effect wearing off only removes one stack.

Exemple, inflicting a bleeding over a current bleeding seems to also apply a permanent heal debuff.