This occurs a lot in WvW these days to me.
It’s like this: People know that sometimes when you building a ram you get stuck can’t move etc. This happens sinds release patch also when you get imobilized at the moment you blink any other movement skill.
So a 2 sec imob > perma imob (weapon switching does’nt help) and even when it does it can be on cooldown so it’s to late anyway.
I experience this now 4 times today. And yesterday 2 times.
It’s still working as intended most of the time, but after patch this also occurs. Maybe worth the while to look into it?