I thought it might be a cache issue as well but something would have had to throw it out of whack for it to be cached like that. It would be different if I added a new section or something and the old version that was cached doesnt show it but it seems to be an issue with the font size. I also noticed that no matter how many times i delete the mobile theme it keeps coming back, dont know if thats related or not.
EDIT: I think i might have figured it out, ill keep you updated
LAST EDIT: I figured it out, I noticed one of my category descriptions was stupid long, so just for the hell of it i deleted it and its been normal on all devices ever since with 50+ refreshes on each one.