Works just like the old TabGroups Add-On and made me switch to quantum!

I just have one problem: I'm currently managing about 700 tabs via Panorama View. Switching the Group does NOT hide all the other tabs, it just scrolls along the 700 tabs, which is unfortunate as it's quite confusing.

Am I doing something wrong or is the option just not there yet?

E: I just enabled extensions.webextensions.tabhide and I'm the happiest man alive. THANK YOU!