Every damaging effect upon you will leave you in combat. This means that while your character is bleeding/burning/being poisoned or is being struck by a status effect will always be in combat as it is an effect that affects your vitalities (I couldn't be healing in real life by just sitting if i would be bleeding or burning).
Why regen lp/ep exist? ( not % ) and why costitution increases regen lp , same as energy stat for regen ep btw when you are not in the battle but you have bleed debuff that remove your life of 1149 LP every 2 sec for 1 min ~ why regen doesn't work? It can be useful togheter the LP Pot to save own life