Guild Wars 2

so i am a fan of underwater combat, but there is one problem

the blast finisher of arcan wave doesnt work 90% of the time underwater

someone knows how to fix / reason why it doesnt / ways to use it properly?

using it mainly for earth 5 for smoke field , currently i am bound to use either water 5 , water 3, or arcan brilliance through it(underwater still)

Underwater combat is a blatant bug dude

ye, neverthless i love it.