Sublime: 3.2.2 build 3211
Trying to open a Sublime workspace from the command line:
subl -n --project ~/blah.sublime-workspace.
If the workspace is not currently open, then sublime opens the workspace up just fine in a new window and make it active focus. Nice
However, if the workspace is already open, either in the background or foreground, then the expected behavior of switching focus to the open workspace does not happen. Instead Sublime creates a new blank window and sets the focus to that blank file.
After googling I see this bug has been around for years and quite a few mentions on here and Stackoverflow.