New Blog Template doesn't work in firefox on Mac

I’m running OSX 10.9.5 and firefox 33.0.5.

I’ve got New Blog Templates setup with 2 templates one of which is the default theme. In firefox when I try and select the non default theme it doesn’t work. And by that I mean it lets me select the theme, but then when you load the new site you only get the default theme. I’ve also tried it using the different select options that blog templates provides in the settings page.

There are no problems however in chrome 37 or safari 7.1

Has anyone else had this issue? I’ll try this a bit later on my windows machine, but just thought I’d post this bug I’m running into.