Index: sources/gui/qml/compounds/ValueAdjuster.qml
===================================================================
diff -u -r863764371ec0a4569403135975a0a3f44e516163 -ra3c7ec36bfb8189f4ee82626a29561f7563513b3
--- sources/gui/qml/compounds/ValueAdjuster.qml	(.../ValueAdjuster.qml)	(revision 863764371ec0a4569403135975a0a3f44e516163)
+++ sources/gui/qml/compounds/ValueAdjuster.qml	(.../ValueAdjuster.qml)	(revision a3c7ec36bfb8189f4ee82626a29561f7563513b3)
@@ -127,10 +127,12 @@
                 if (grabbed) {
                     if ( _slider.opacity === 0 ) { _animator.start() }
 
-                    _slider.pos = Math.max(0, Math.min(1, mouse.x / parent.width))
-                    let raw =  _slider.from + _slider.pos * (_slider.to - _slider.from)
-                    let stepped = Math.round((raw - _slider.from) / _root.step) * _root.step + _slider.from
-                    didChange(stepped)
+                    if (_root.step != 0) {
+                        _slider.pos = Math.max(0, Math.min(1, mouse.x / parent.width))
+                        let raw =  _slider.from + _slider.pos * (_slider.to - _slider.from)
+                        let stepped = Math.round((raw - _slider.from) / _root.step) * _root.step + _slider.from
+                        didChange(stepped)
+                    }
                 }
             }