Is there a button that makes me dump all my Adrenaline?

[Noctis]

A couple times now, I've noticed a case where I had a full bar of adrenaline that gets instantly emptied for no apparent reason. This is like instantaneous and much faster than other circumstances where I'm out of combat and my adrenaline bar slowly empties. So I'm wondering what's going on and if maybe I'm accidentally pressing a button that dumps my adrenaline bar.

[Saradomin_Mage]

This occurs if you leave combat while going into an interface or another form of busy action (such as NPC conversation, opening a door in Dungeoneering, or teleporting, to name a few).

 

Normally, your character takes a while to transition from being in combat to out of combat, and when this transition occurs normally, adrenaline drains slowly, step by step, after you leave combat. However, if this transition occurs during any of the actions mentioned, then you'll get a sudden full drop to zero adrenaline.

 

You can avoid this by waiting until your character leaves combat normally and his adrenaline starts slowly decreasing. Rather annoying, of course.

[Sy_Accursed]

That or you are using an ultimate ability, they require 100% adrenaline and use it allllll up when fired off

[Noctis]

That or you are using an ultimate ability, they require 100% adrenaline and use it allllll up when fired off

 

Not even fighting anything when it happens. The answer before yours is probably right.