@rlmrdl said in Lost Tabs in Workspaces:
How do I recover the missing tabs?
Click the magnifying glass at the top right of Opera and look in the "recently closed" tabs list and click each to reopen them. If you're lucky, they'll open in the workspace they were in.
Besides that, goto the URL opera://history. You should pages you previously visited where you can click on them to reopen them.