Stuck on mount in the nexus dungeon

Hello, most of the times i am in The Nexus dungeon I am experiencing a bug. Once I ride the drake to transport my action bar bugs and I see my spells instead of the drake spells, and the worst thing I cannot even unmount, so I am gigauseless. How can I fix that issue?

Most likely it's some sort of UI addon.

I am using ElvUI, but on my main char its not a problem, and I use the same config