Buffer underflow in PvP in Phrecia League

I just took abilities from Phrecia League ascendancy "woodland shrines" and "innate blessing" in a row. And after killing any players' creature or damaging players I get "buffer overflow" error. It doesn't matter the source of attacks, "caustic arrow" or "artillery ballista" - the result is same.
This crashes game for ALL players in the area (I was also within the party, but don't think it's matter as random enemy players also disappeared as I checked after a reconnecting).
It's reproducible in 100% times with my character. I have not got any problem until took those abilities.