How to debug test discovery error

In the MATLAB Test Browser, when an error occurs during test discovery (for example while creating test parameters or peforming test class setup), I don't know how to effectively debug the error or reproduce it in a controlled environment. It just gives me the message and no context, no location or stack info. Adding a breakpoint in the setup code does not help. It does not pause there.

How can I get more information on the error that occurs during test discovery?

This is really frustrating to debug at the moment.