executing updaterRunnable one after the other, to prevent simultaneously execution and the resulting exception
java.lang.Exception
        at org.esa.beam.util.Debug.handleAssertionFailed(Debug.java:397)
        at org.esa.beam.util.Debug.assertTrue(Debug.java:281)
        at org.esa.beam.framework.ui.PixelInfoViewModelUpdater.update(PixelInfoViewModelUpdater.java:136)
        at org.esa.beam.framework.ui.PixelInfoViewModelUpdater.update(PixelInfoViewModelUpdater.java:102)
        at org.esa.beam.framework.ui.PixelInfoUpdateService$UpdaterRunnable.run(PixelInfoUpdateService.java:92)