GM 4.5 does not work in Torbrowser 8.0a9

[LRN]

When installed onto Torbrowser 8.0a9 (based on Mozilla Firefox 60.1.0esr) (32-bit) GM 4.5 does not work.
The "New user script..." menu item does nothing when clicked.
This is what the browser console says:

12:19:48.940 Error opening user-scripts DB! <unavailable>  user-script-registry.js:57:7
	openDb/</dbOpen.onerror moz-extension://dfaa9521-db7d-477d-ad92-1a305e431259/src/bg/user-script-registry.js:57:7
12:19:48.945 <unavailable>  downloader.js:111:11
	install/</< moz-extension://dfaa9521-db7d-477d-ad92-1a305e431259/src/downloader.js:111:11
12:19:48.946 Error: undefined  downloader.js:105:7

Uninstalling, re-running TB and installing GM again didn't work.
Renaming the gm_scripts directory to ensure that GM considers it non-existing didn't work also.

[johnp]

Sounds like bug 781982, i.e. IndexedDB does not work in Private Mode and Tor Browser launches by default into Private Mode.

[pihug12]

Same thing happens with Firefox when "never remember history" is set. 😞

It's these issues too: #2825 or #2967

[Thorin-Oakenpants]

FYI: TBB also has privacy.firstparty.isolate defaulting to true, so #2985 will also have an affect

[jbostoen]

Good to see the workaround, can confirm it's still a bug with the now officially released Tor Browser 8.0.1