Generally every cc in the game in pvp applies a cc immunity to the affected player for about 3 seconds after the effect ends. This occurs without having to cc-break and use stamina, but it also occurs when cc-breaking because the immunity is applied when the effect ends, which obviously happens with cc-breaking.
The problem that I'm seeing, is that Puncturing Strikes and morphs do not apply said immunity independent of cc-breaking after the effect ends, either that or a secondary knockback can occur on second activation of the ability (spamming)
BEFORE the cc immunity applies, therefore nullifying it and allowing it to be chained.
Regardless of the cause, I know without a shadow of a doubt that the knockback from this ability and its morphs when used consecutively can keep a target cc'd indefinitely, rendering the affected player immobile and unable to use abilities for more than a split second between knockbacks.
Whenever a templar with this ability can catch someone without stamina (and sometimes even with a good bit of stamina), they can spam the hell out of either of this abilities morphs and perma-cc a target til they die. Unless of course they happen to have something like mist form/immovable handy and are able to get it off between stuns, or preferably beforehand but I rarely am afforded such luxurious forethought.
I'm going to go ahead and assume this ability to cc chain not intended and suggest this ability+morphs needs a good looking at in this regards. However if it is intended, I'd like to know that's the case so I can start permanently avoiding templars as well as dragonknights in 1v1 fights and be able to plan accordingly.
P.S. When I brought this up to a templar who I fought and used this tactic, he simply informed me that there was no such cc immunity without cc-breaking, and that I was flat out wrong. I was almost positive this wasn't the case. I asked him to test it with me and he simply refused and kept asserting he was correct without needing to test...
contd...
Momentarily afterwards I found an unsuspecting AFK enemy, stunned him with the various types of cc I had, waited till the effect ended and saw the swirly circle around the enemies feet, tried to cc again, and voila! Immune to the cc portion of the abilities. I tested this with wrecking blow and mass hysteria, the two cc's I typically use in pvp.
So, if anyone has the same doubts, I implore you to go test it for yourself, please prove me wrong, because as it is I'm at least 99% positive this cc immunity does indeed exist and is a regular part of pvp life. And even furthermore I'm just as sure that Puncturing Strikes and its morphs when spammed are able to get around this cc-immunity, leading to easy kills through a one ability spam tactic.
So TLDR; someone look into this, I've done all that I can while being refused the assistance of a player from another faction to test it on. Or if a dev could swoop in and tell me either this is intended, or is being looked into, I'd very much appreciate the insight.