From December 4th, 2020 to May 16th, 2022, 100% user give 1-star rating. for Tab Session Master chrome extension.
Worse than Chrome's History>Recently closed as loading many tabs will make the extension fill your memory by all of them making it hang.
The "Save" button opens up a in-tab pop-up window that, if you are lucky, will stay open until you have managed to write a title for it before disappearing. If you are SUPER lucky, it will even stay open until you have managed to press "Create." The widget will not recognize tabs that have been suspended, at least not ones suspended by Tab Suspender. And you will not be able to move tabs from one group to the other group as you please, forcing you into opening several windows to sort through the tabs as you want them from window to window before saving them once more.
Disaster on opera. Please fix.