I am using the multi-root workspace in vs code to open multiple python packages, each with their own tests folder containing the tests for that package.
The test explorer displays all tests, but does not group them by the workspace they come from.
For a simple multi-root workspace with just two packages, this looks like the following screenshot:

Since all folders are named in the same way, its cumbersome to determine which entry is from which workspace.

I also searched through the extension's settings, but didn't find anyting related.

I think the best solution would be to group the tests simililarly as in the repositories in the source control view. What do you think?