In eotm, hitting the ogre champ boss—-and with beserker stance activated, i was losing adrenalin faster than i could gain it (ie it went up, filled half an adrenalin bar, then fell off immediately).
This is the second bug in exactly the same place on exactly the same boss iv reported.
https://forum-en.gw2archive.eu/forum/support/bugs/Combustive-Shot-in-EOTM-red-side/first#post4367857