@nomadofnorad I have lost months of carefully prepared sets of 4 workspaces, all gone thanks to the cretins behind this update. All my open tabs, also gone.

Ok, one last update, I had already rebooted my laptop before opening this report here and the issue persisted, now I don´t know exactly what happened but after a new reboot (needed to reboot after upgrading VMWare Player) the issue is gone, that dead column is working without issues. Hope this helps anyone having the same issue.