Incompatability with "Simple Tab Groups"

[kevjustice]

I use Simple Tab Groups to switch between my tab groups. When your plugin is enabled, and I click "manage groups" in Simple Tab Groups, the window just continuously opens and closes until I close Firefox.

[SuperGianchi]

Same here.A trick is to click on the hamburger menu and click "Add-ons and Themes" (or press Ctrl+Shift+A). This will open a new tab without container. Then, open the "Manage groups" tab. The "Manage groups" tab is opened in "No container" and it works properly.