The t2 skill bloodbeam resets bloodunion back to 1 upon activation. I believe the intented effect was that it adds 1 blood union instead of resetting it back to 1. Example: I have reached 3 blood union, I use bloodbeam and my blood union is set back to 1 instead of adding one. When I have no blood union and I use the skill, my blood union is set to 1.
Note: I only tested this on dungeon mobs.
Note: I only tested this on dungeon mobs.