The delay of Hallowed Ground is unacceptable

[Garnatian]

The animation lock, in which you can not take an action while another action being done, is intended.

Ignorant comment.

OP isn't talking about that. OP is talking about the ability being used and going on CD and still dying. This is purely server lag. Client side recognised you've used the ability and Server side does not, which leads to your death.