Hey guys!
Don't know if you regularly visit these forums, but I'm gonna give it a try.
I think the title is pretty self-explanatory. It would be great if we had this small feature since it would allow us to double-check work when closing a window that has multiple tabs open across multiple workspaces.
I imagined the icon of the workspace could have a small green dot when multiple tabs are opened in that workspace. It could also be the number of tabs opened, but don't know if that would work aesthetically.
Keep on the great work guys! We choose Opera for a reason