Web Compatibility Support • Re: Suggestion for a fallback browser

Noone knows? There must be a FF extension that does this.

https://addons.mozilla.org/en-US/firefo ... n-manager/

I do have that installed but it's not doing that. For PM I have this https://addons.palemoon.org/addon/session-manager/, and when it crashes badly I get a popup on next start asking me what sessions to open. That's basically what I'm looking for.