Addon not working under e10s, Options page hangs

[theultramage]

I updated from ESR 52 to 56.0.2. This updated the addon from 1.5 to 2.0. The list of hashes was converted, but the configured sites are not being blocked from history. The addon seems to not be working. However, the Historyblock dynamic context menu does get added, so it actually is?

When I open the addon's Options page, clicking on any toggle or button makes the page freeze, and the change is not recorded. Manually resetting the blocklist and restarting does not solve the issue.

The browser console reports the following when I click on anything:

window.gBrowser is undefined  RemotePrompt.jsm:41
call trace:
	openTabPrompt resource:///modules/RemotePrompt.jsm:41:9
	receiveMessage resource:///modules/RemotePrompt.jsm:33:11
	receiveMessage jar:file:///C:/Program%20Files/Mozilla%20Firefox/browser/omni.ja!/components/nsBrowserGlue.js:205:15
	receiveMessage self-hosted:991:17

EDIT: Disabling e10s restores all functionality, but it makes the browser stutter a lot when loading new tabs. Would it be possible to make HistoryBlock e10s-compatible?
EDIT2: I guess this is essentially a wordier duplicate of #25...

[Tampa]

Would be nice to get this fixed up, maybe instead of a user prompt to manage the list instead just adding a button to the addon bar for "add this host to blacklist"?

[theultramage]

The bugzilla page in the linked issue mentions it being 'verified as fixed' in FF58. I did not have the opportunity to verify if the extension works in latest FF. I also no longer remember the reason why I was testing it on FF56, when at the time of writing, FF62 was already available. Possibly because of compatibility issues with some other old extension.