I just noticed that this mod has stopped working in my current save. I'm on Fulgora and it's not working in person or remote view. I started a new game and it works fine there. I can't currently return to Nauvis so I can't confirm that not being on Nauvis is the problem.
Also, there is a shortcut I think, shft-m or control-m, which enables or disables the ability? Is that possibly toggled? (It'd be visible by the shortcut button in the bottom being toggled)