Similar here..... after unannounced update to Opera One, all tabs (1000+) from all workspaces (23) are gone, just one of the formerly two open windows (the second one) with its tabs is still here.
Edition Windows 10 Pro
Version 21H1
Installed on 25/08/2021
OS build 19043.2364
Experience Windows Feature Experience Pack 120.2212.4190.0
