Hi Jeremy, Using the Firefox developer edition v54.0 (18-4-2017) with Linux Mint, I can confirm it does work with private browsing and with history diasbled.
I like the new icons (no local TW, TiddlyFox disabled and Tiddlyfox enabled) better than the old ones. Just for the record (guys who did not have seen the new ones), the new ones look like: Cheers, Ton -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/c78a03cf-f03b-4aca-b2d3-c9854d2bd7cf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

