Using the new release version 0.29.7.4 on Windows 10.
Once modifying a class and building completed, then running an associated test class. The Class never shows back up in the Code Coverage tab and no highlighting is present when the class is opened. Clicking refresh does not correct it. I verified the test runs did indeed add coverage by viewing the class in salesforce. This used to work before upgrading, tests are useless at this point in Welkin.