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Changes to the indicator at the top of the editor's error stripe (i.e. the small green/yellow/red box that indicates whether the current Java source file has errors (or warnings) or not) should directly propagate to the error indicator state of the document's node in the Projects and Files windows. Currently the latter is only updated when switching to a different document in the editor. It's irritating to see/not to see error indicators in the Projects or Files window when there is no error/there are any errors in the current Java source file in the editor.