Torbutton's Cookie Dialog breaks if you enable disk storage (E4X)
This might be a dup of #6202 (closed), but the E4X deprecation seems to have already begun in part:
https://bugzilla.mozilla.org/show_bug.cgi?id=752281
We hit that bug too, if you enable browsing history storage in TBB.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information