Mouse button not working, but works on keyboard

Got an issue with a keybind. The number 3 on my Razor Naga keeps not working. It will work for a while, and then the keybind just stops responding. It’s currently just bound to Jab, so mouseover macro.

The keyboard works fine, but it’s the mouse that won’t work. I’ve checked all the obvious places like BT4, or ingame keybinds. I’ve also checked vuhdo incase it’s been rebound.

What’s strange is that it responds sometimes, and then just stops working. The “3” key functions fine outside the game.

All addons up to date. Any thoughts?