Druid Apocalypse spell says wrong weapon/ doesnt gain glory

when taking the ascendancy class shaman for druid i spend 4 points in shaman to unlock the skill apocalypse. it doesn't say it requires a specific weapon to use yet when you hover over the skill it says something about not having the right weapon for this skill. when used with talisman you do not gain glory from elemental damage like it says you should (more likely this skill is unusable due to it saying you don't have the right weapon but idk) please fix asap as apocalypse WAS half the reason i took this ascendancy and not being able to use it as a wyvern druid is a complete waste/letdown.

The moment you remove your talisman from your other weapon set, it will let you cast it and will start gaining glory with your talisman.

I guess the game assumes that you have to be able to cast spells to be able to build up the glory, which you can't seem to be able to do in shapeshift.