As per the title, after talking to a lot of friends who play at lower ping on PC EU than myself at 200+, I thought that being stuck in the CC break animation or being unable to break free despite inputting 'interrupts' was a personal issue with higher ping but it is seemingly an issue everywhere in PvP.
I am unsure what exactly causes it but the most consistent way to see that a stun has bugged out is using an AddOn such as Combat Metrics and looking at the abilities you cast, generally when you try to break free but fail it will output 'Your Heavy Attack was registered' several times.
From just brief testing and asking friends generally it seems unblockable stuns break the most, Warden Charm, Streak, Arcanist Charm, Fossilize etc. I am hoping other people have had similar issues and could post any clips/CMX screenshots they have of this happening in PvP, with the hope that someone at ZoS sees it.
A quick example of what CMX outputs on a bugged stun, other people have had the same whilst playing on low ping around ~30 and I am unsure why it registers the 'interrupt' keybind as a heavy attack (I have Bash/Interrupt bound on Middle Mouse Button so there should be no registered blocks/heavy attacks that could get stuck)
Fashion is the true endgame.PC EU