I looked it up and found out it's a firefox issue. When I click on my select box it opens the menu like normal but when I hover over a value it changes the value to that, but when it looses focus it doen't select.
Re: Select tag changes value on hovering above item.
Do you mean that you can't select an item in a Select box on a web page if you click it to open the list?
Can you select an item with the cursor Down and confirm with Space or Enter?
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
Do not click the Reset button on the Safe mode start window or otherwise make changes.