Nostalrius Begins - Quality wow vanilla realm (1.12)

So I've been playing priest for a few months now and I experience the same thing just about every week. I will have Fear Ward applied, a lock will cast fear, I get feared, and the Fear Ward buff will stay applied. On average this happens 5-10 times a week. What I found interesting is that I can keep getting feared through Fear Ward, until I re-apply the buff again.

Has anyone else experienced this?

I've seen MT getting feared on Nefarian several times despite having FW applied continuously. Needless to say it's pretty fuckin annoying.