When observing any processes through jconsole, if user chooses java.lang -> ClassLoading -> Attributes -> LoadedClassCount and double-clicks the value for LoadedClassCount (bar representation), the bar window becomes half-invisible at the time when it first gets populated with the LoadedClassCount.

This should not happen, the Window/ chart visibility should not be affected by the updated value/ help message.
When observing any process through jconsole, if user selects the MBeans tab -> java.lang -> ClassLoading -> Attributes -> LoadedClassCount and double clicks the value for LoadedClassCount, a chart of number of classes loaded is displayed. However, if the user clicks on the "Refresh" button, the chart quits inadvertently and user is presented with the original (text) representation.

This should not happen, the chart representation shouldn't quit inadvertently just by clicking the "Refresh" button.