fix BehaviorPage scrolling capability

shell/package/contents/configuration/BehaviorConfig.qml

@@ -33,11 +33,7 @@ import "../controls" as ExtraControls
 
 PlasmaComponents.Page {
     Layout.maximumWidth: content.width + content.Layout.leftMargin * 2
-    //fix the height binding loop when showing the configuration window
-    Layout.maximumHeight: Math.min(28*theme.mSize(theme.defaultFont).height + units.smallSpacing * 2, availableFreeHeight)
-
-    property int availableFreeHeight: dock.screenGeometry.height - dock.normalThickness - 2*units.largeSpacing
-                                      - header.height - headerSpacer.height - tabBar.height - actionButtons.height - 36
+    Layout.maximumHeight: content.height + units.smallSpacing * 2
 
     property alias dockTypeSelection: _dockTypeSelection
 

shell/package/contents/configuration/LatteDockConfiguration.qml

@@ -342,12 +342,18 @@ FocusScope {
             Layout.maximumHeight: height
 
             width: maxWidth - units.smallSpacing
-            height: behaviorPage.Layout.maximumHeight + units.smallSpacing * 4
+            height: availableFreeHeight + units.smallSpacing * 4
 
             color: transparentBackgroundColor
             border.width: 1
             border.color: theme.backgroundColor
 
+            //fix the height binding loop when showing the configuration window
+
+            property int availableFreeHeight: Math.min(29*theme.mSize(theme.defaultFont).height + units.smallSpacing * 2, //calculatios according to font size
+                                                       dock.screenGeometry.height - dock.normalThickness - 2*units.largeSpacing - header.height - headerSpacer.height
+                                                       - tabBar.height - actionButtons.height - 36) //calculations according to screen geometry and elements heights
+
             PlasmaExtras.ScrollArea {
                 id: scrollArea