Image previews in Firefox's Private Browsing mode are being being saved in normal-mode history.

[mikeconley]

Originally filed in Mozilla's Bugzilla here.

Supposed STR (I have not personally verified this - I am filing this on behalf of another Redditor):

1. Open a private-browsing window in Firefox
2. Do some image previews on Reddit in the private-browsing window
3. Check history, and find those images in the history.

Apparently affects RES 4.1.2 on FF 20.0+.

Relevant documentation for Firefox's new private browsing mode:

1. https://developer.mozilla.org/en-US/docs/Updating_addons_broken_by_private_browsing_changes
2. https://developer.mozilla.org/en-US/docs/Supporting_per-window_private_browsing

[jewel-andraia]

Related for doing it cross-browser:

• detecting private for Opera
• Chrome already has a check, but we should regression check it if that code changes
• Safari

[honestbleeps]

Firefox fixed by 7360ffd

opera to come.

[honestbleeps]

Opera is fixed in a61dd86

Safari is won'tfix - it still doesn't allow localStorage in private browsing, so RES essentially can't run at all.