Ground-targeted abilities (Shards, Nova, Destro ult, etc) have been bugged on XBox One since Elsweyr. When I press the button, the on-screen icons "toggle" normally, but the ability does not fire off. It often takes several bar swaps and casting other abilities to clear the bug and get the ability to work again.
There is also perma-snare bug, which requires a heavy attack to clear and move normally. This bug existed before Elsweyr, but seems to happen far more often now.