All my tabs disappeared

[ZerosNOnes]

Solution here

Just click the return to previous page button on each empty tab and it’ll restore it.

New update broke my tab groups

I had the exact same problem, all the grouped tabs are now replaced by empty tabs. Fortunately, I had an extension that saves session when the browser is closed. But I just found another way to restore the tabs individually. Just click the return to previous page button on each empty tab and it’ll restore it.