Please fill in as much as you can :
Date and Time(Please, specify the timezone) :
Server Name: Orsha
Team Name: Hamabe
Character Name: Hitotose
Bug Description :
While running the instant dungeon LV300,
my Featherfoot’s magic casting(blood sucking) with Surspell buff can even be interrupted
by the Vilkas Fighter’s knocking_back attack.
If it’s normal situation please delete this topic.
It is normal situations. Buffs like this only prevent cancellation from damage, not from pushes, stuns, knockbacks and so on.
Skills with cast bars like Meteor will sustain through pushes/stuns/etc with Surespell enabled, but you must keep the cast held until your character is back in a neutral state and let go. The spell will go out and cast time will be preserved.
I’ve never tested Blood Sucking, but I assume any kind of CC will stop the channel and nothing exists to restart it, so it will just end.
Note that for your skill to go through, it must be safe from interruption until the end of the animation. If you cast something like Electrocute which takes ages for the animation to complete, you can have your skill easily cancelled by stuff like Gust or knockback attacks. In that case, just keep the skill button pressed until you’re done suffering the detrimental effect and you should be fine.