Scenario: I opened a custom tab from a third party app, but the webpage requires me to log in (I use bitwarden). Custom tabs aren't add-ons enabled (something to improve on), so I chose to open the webpage on Firefox Beta from the three-dots menu of the custom tab. When Firefox Beta launched, the bitwarden add-on (or any other add-ons) is not present in the three-dots menu in the full Firefox Beta app where it should be.

If I remove Firefox Beta from my recent apps, and launch Firefox Beta again, then it works just as expected (add-ons are accessible from three-dots menu).