CRITICAL - Mitigation Stats Break Entirely! Only fixed with relog

For some reason Mitigation stats will randomly get decreased over time causing your character to rack up negative mitigations. This effect is permanent and not represented via a debuff.

I noticed this when fighting level 19 1 Star gryphons. After a while my mitigation would be 30-40% lower PERMANENTLY and this effect was only fixed by relogging which reset my stats to their correct values.