I have recently updated to the latest release for Studio and in Test Explorer the option to run a selected test is greyed out. I looked through the forum and notes but did not see anything other than a library about test explorer. If I missed something about this or if I need to change a setting please let me know. I used this functionality a lot when creating and debugging tests.
I believe by default if you select run on a test case it runs only than and also same can be achieved by right clicking on file and click run
And there is no such removal…can you please try and confirm…and share some screenshot or so of the behaviour