Tumblr buttons/interface not loading properly
When Firefox updated to its latest version (28.0) the reblog, favorite, follow, and dashboard buttons that usually show at the top right of any tumblr page stopped appearing. Further, glitching caused the "queue" function not to show any time/dates.
Via Firefox Safemode the problem was traced back to HTTPS everywhere, don't know why.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information