Tumblr Safe Mode Redirect v1.0.1
Redirects the tumblr safe mode warning page, from attempting to open a blocked tumblr, to the dashboard view of the blocked tumblr, which still works. While not as convenient as the normal tumblr blog view, you can at least still view the content.
You MUST be logged in order to view restricted tumblrs. It also can't take you to specific posts - tumblr has no ability to do that through the site, it always takes you to the most recent posts.
Tested working on FF 66.0.4.