Game Mechanics: Endurance drain bug

[Dullah]

Theres a bug with endurance drain or with its graphical representation. It seems to happen if you fight for long periods of time without ever sitting. It doesn't show your yellow bar drained, but you begin hitting for minimal damage far more often (lots of base damage backstabs etc). I've seen this bug infrequently, but now with kunark and disciplines, its been happening regularly after popping a disc. After a disc, my damage output will be broken until I get a acumen or sit for a while. Afterwards, my dps returns to normal. The problem is that I don't see endurance or anything correctly indicating the true status of my endurance.