I have a odd issue where, whenever i click one of the buttons on my mouse, Firefox either goes a page forwards or backwards depending on which mouse button i click. When it goes a page forward, but it's not available, it instead goes back to the Firefox homescreen. I've had to rewrite this several times because whenever i click on a new section to type, it goes back a page.

This issue happens at random. Sometimes i will click on a empty spot on any site and only on the 10th click will it go a page back, but other times it happens instantly.