Ok zos, I've been experiencing a strange big lately and it's really starting to get on my nerves. This almost exclusively happens on my Templar healer, though sometimes on my nb tank as well.

Here's the deal: I'm healing a dungeon group. We're doing trash or a boss fight or whatever, and I try to use abilities like ritual of retribution, channeled focus, etc. On my nb it's been abilities like siphoning attacks and mirage. These are self buffs or ground effects, not attacks.

When trying to use these abilities, I get the message in the top right of the screen saying "target is immune" and the ability will fail to cast. Usually I'll have to spam the ability 3 or 4 times before it actually works.

Lag is already a problem in dungeons lately, so combined with this glitch it can take several seconds just to get ritual or focus down for major mending and then several more to get a heal cast, especially if I'm having to swap bars (outside of dungeons is fine, but in dungeons bar swap is soooo damn laggy, nearly a two second delay).

Obviously this becomes a severe problem during boss fights rather than just the incredible inconvenience it is on trash pulls.

Why am I getting a target is immune prompt when I'm trying to use buffs and area abilities?