@Alexey Belkov [JB] Running a Kotlin unit test by clicking on the play button next to the test still runs all tests in the class instead of just the one test. I think this bug has already been reported and fixed for a short while. I am on 2019.3.1, MacOS and see this bug again.

It will be fixed in 1.3.70: https://youtrack.jetbrains.com/issue/KT-33787