Prevent spurious updates to 'onPreferenceChanged's if the preference doesn't match.

plugins/SimulationView/SimulationViewMainComponent.qml

@@ -71,6 +71,11 @@ Item
             target: UM.Preferences
             onPreferenceChanged:
             {
+                if (preference !== "view/only_show_top_layers" && preference !== "view/top_layer_count" && ! preference.match("layerview/"))
+                {
+                    return;
+                }
+
                 playButton.pauseSimulation()
             }
         }

plugins/SimulationView/SimulationViewMenuComponent.qml

@@ -22,6 +22,11 @@ Cura.ExpandableComponent
         target: UM.Preferences
         onPreferenceChanged:
         {
+            if (preference !== "view/only_show_top_layers" && preference !== "view/top_layer_count" && ! preference.match("layerview/"))
+            {
+                return;
+            }
+
             layerTypeCombobox.currentIndex = UM.SimulationView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type")
             layerTypeCombobox.updateLegends(layerTypeCombobox.currentIndex)
             viewSettings.extruder_opacities = UM.Preferences.getValue("layerview/extruder_opacities").split("|")

resources/qml/ActionPanel/SliceProcessWidget.qml

@@ -142,6 +142,11 @@ Column
         target: UM.Preferences
         onPreferenceChanged:
         {
+            if (preference !== "general/auto_slice")
+            {
+                return;
+            }
+
             var autoSlice = UM.Preferences.getValue("general/auto_slice")
             if(prepareButtons.autoSlice != autoSlice)
             {

resources/qml/Preferences/GeneralPage.qml

@@ -746,6 +746,11 @@ UM.PreferencesPage
                 target: UM.Preferences
                 onPreferenceChanged:
                 {
+                    if (preference !== "info/send_slice_info")
+                    {
+                        return;
+                    }
+
                     sendDataCheckbox.checked = boolCheck(UM.Preferences.getValue("info/send_slice_info"))
                 }
             }

resources/qml/Preferences/Materials/MaterialsBrandSection.qml

@@ -139,6 +139,11 @@ Item
         target: UM.Preferences
         onPreferenceChanged:
         {
+            if (preference !== "cura/expanded_types" && preference !== "cura/expanded_brands")
+            {
+                return;
+            }
+
             expanded = materialList.expandedBrands.indexOf(sectionName) > -1
         }
     }

resources/qml/Preferences/Materials/MaterialsTypeSection.qml

@@ -130,6 +130,11 @@ Item
         target: UM.Preferences
         onPreferenceChanged:
         {
+            if (preference !== "cura/expanded_types" && preference !== "cura/expanded_brands")
+            {
+                return;
+            }
+
             expanded = materialList.expandedTypes.indexOf(materialType.brand + "_" + materialType.name) > -1
         }
     }

resources/qml/PrintSetupSelector/PrintSetupSelectorContents.qml

@@ -77,6 +77,11 @@ Item
                 target: UM.Preferences
                 onPreferenceChanged:
                 {
+                    if (preference !== "view/settings_list_height" && preference !== "general/window_height" && preference !== "general/window_state")
+                    {
+                        return;
+                    }
+
                     customPrintSetup.height =
                         Math.min
                         (