Odd download numbers rendering?

Anyone else notice this? On the first load of my uploads page, some of the download and makes have stray characters / words. A reload fixes it so it’s no biggie.

I’m using the latest Firefox browser.

That kind of looks like it’s trying to translate the numbers (e.g. 2k) into English (e.g. 12 of the 1), but I’m not sure why that’d happen or why it thinks that’s something to translate. It looks like “GIF” is messed up on the rightmost photo as well.