The dashboard is part of the tools that we use in development and for maintaining the quality of the FieldTrip code. Included in the test directories in the FieldTrip release are many test scripts (technically they are functions). We use these initially for identifying the cause of a bug, or for designing the end-user script that matches some new functionality. Once the bug has been fixed and/or the new functionality implemented, we keep the test scripts for regression testing.
If you suspect that there is an problem with the FieldTrip code, the best way for you to report is is to post it on bugzilla and to contribute a (small) test script that helps us to reproduce the problem.