Yesterday, Opera updated itself to Opera One, or whatever the new version is called. I mostly got used to the new interface, and at some point I also poked Manage Workspaces with a stick to see if they had added more choices of workspace icons, but didn't change anything.
I fired up Opera today, and noticed that the Workspace at the bottom of my list of Workspaces was now completely empty. It had a large number of pinned tabs and whatnot on it. I'm pretty sure that one was okay (that is, intact) last night when I quit out of Opera and shut down my Windows 10 machine, in fact I had just added another pinned tab to it not too long before shutting down, say within an hour or two before shutting down.
I do not know why it would have cleared that space out entirely, and I am hoping the lost tabs are stored in some sort of recent-history part of the stored settings and/or history files. All the rest of the Workspaces are completely intact, so far as I can tell.
How do I get the stored tabs back for that now empty Workspace?
edit: I am on Windows 10, Pro 64bit, with Opera One (version: 100.0.4815.76),