Index: sources/gui/qml/components/RangeSlider.qml
===================================================================
diff -u -r2dd4e9c952d65e68f1c81a1cfc13d1f96b0d7d43 -r94d069e17fbb5872b66a4926d769634eceb42e82
--- sources/gui/qml/components/RangeSlider.qml	(.../RangeSlider.qml)	(revision 2dd4e9c952d65e68f1c81a1cfc13d1f96b0d7d43)
+++ sources/gui/qml/components/RangeSlider.qml	(.../RangeSlider.qml)	(revision 94d069e17fbb5872b66a4926d769634eceb42e82)
@@ -122,17 +122,21 @@
     }
 
     function incrementMax(vInStepSegments) {
-        updateMaxValue(vInStepSegments, true)
+        if ( ! maxAdjusted ) { setMaxValue(_root.maxValueUpperBound )}
+        else                 { updateMaxValue(vInStepSegments, true )}
     }
     function decrementMax(vInStepSegments) {
-        updateMaxValue(vInStepSegments, false)
+        if ( ! maxAdjusted ) { setMaxValue(_root.maxValueUpperBound )}
+        else                 { updateMaxValue(vInStepSegments, false)}
     }
 
     function incrementMin(vInStepSegments) {
-        updateMinValue(vInStepSegments, true)
+        if ( ! minAdjusted ) { setMinValue(_root.minValueLowerBound )}
+        else                 { updateMinValue(vInStepSegments, true )}
     }
     function decrementMin(vInStepSegments) {
-        updateMinValue(vInStepSegments, false)
+        if ( ! minAdjusted ) { setMinValue(_root.minValueLowerBound )}
+        else                 { updateMinValue(vInStepSegments, false)}
     }
     ///
     /// \brief   grays out the rangebar and handler if not adjusted and hasAdjust set to true