Endgame : Can't generate frenzy charges after a respawn until death

As the title says, I have found that I couldn't generate frenzy charges (thus power charges through "Resonance") every other time I respawned in the end game maps. The ability to generate the charges never came back until I died and respawned again, it is kind of game breaker, rendering my character (monk) useless until I die again.
Please fix it.