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Steps to reproduce: 1. open heap dump 2. select a class in classes list 3. invoke Instances button No instance selected To process instances, select a class in Classes view first. is always displayed. The workaround is to double click on the class.
First and any other subsequent selection of a class works correctly for me, row is selected and Static Fields Browser is updated accordingly. If you mean that Instances view isn't updated as well, this is feature, not a bug; selecting an instance by doubleclicking a class isn't a workaround, but intention. See default action Show in Instances View in popup menu, which is also typically invoked by doubleclicking the item. Classes and Instances are two independent views, which may just interact by selecting class' instances. Browsing classes and their static fields is a valid scenario and doesn't necessarily require updating instances view. Will fix initial hint in Instances view when no class is selected to reflect that doubleclicking or popup menu interaction in Classes view is required. Will also test in usability study.
This doesn't sound good for me. Is there any other way how to select a class for Instances view content than through Classes view? If no than Instances is dependent view on Classes view. I think if the Instances would be independent than it should be possible to open not only one Instances view but for each selected class (by action Show instances) in Classes view a new Instances window/view.
I prefer to have disabled the Instances button after the first opening of heapwalker.