Fixed action properties editor ui

Author: bmalrat

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -31,6 +31,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed documentation to clarify bindings with modifiers `overrideModifiersNeedToBePressedFirst` configuration [ISXB-806](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-806).
 - Fixed an issue in `Samples/Visualizers/GamepadVisualizer.unity` sample where the visualization wouldn't handle device disconnects or current device changes properly (ISXB-1243).
 - Fixed an issue when displaying Serialized InputAction's Processor properties inside the Inspector window. [ISXB-1269](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1269)
+- Fixed Action properties edition in the UI Toolkit version of the Input Actions Asset editor. [ISXB-1278](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1278)
 
 ### Changed
 - Added back the InputManager to InputSystem project-wide asset migration code with performance improvement (ISX-2086).

Packages/com.unity.inputsystem/InputSystem/Editor/InputParameterEditor.cs

@@ -249,8 +249,16 @@ public void OnDrawVisualElements(VisualElement root, Action onChangedCallback)
 
                 m_HelpBox = new HelpBox(m_HelpBoxText.text, HelpBoxMessageType.None);
 
-                m_DefaultToggle = new Toggle("Default") { value = m_UseDefaultValue };
+                m_DefaultToggle = new Toggle("Default")
+                {
+                    value = m_UseDefaultValue, 
+                    style =
+                    {
+                        flexDirection = FlexDirection.RowReverse
+                    }
+                };
                 m_DefaultToggle.RegisterValueChangedCallback(evt => ToggleUseDefaultValue(evt, onChangedCallback));
+                m_DefaultToggle.Q<Label>().style.minWidth = new StyleLength(StyleKeyword.Auto);
 
 
                 var buttonContainer = new VisualElement

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml

@@ -28,7 +28,7 @@
                     </ui:VisualElement>
                     <ui:VisualElement name="rclick-area-to-add-new-action-map" style="flex-direction: column; flex-grow: 1;" />
                 </ui:VisualElement>
-                <ui:TwoPaneSplitView name="actions-and-properties-split-view" fixed-pane-index="1" fixed-pane-initial-dimension="230" style="height: auto; min-width: 450px">
+                <ui:TwoPaneSplitView name="actions-and-properties-split-view" fixed-pane-index="1" fixed-pane-initial-dimension="300" style="height: auto; min-width: 450px;">
                     <ui:VisualElement name="actions-container" class="body-panel-container">
                         <ui:VisualElement name="header" class="body-panel-header" style="justify-content: space-between;">
                             <ui:Label text="Actions" display-tooltip-when-elided="true" name="actions-label" />
@@ -39,7 +39,7 @@
                         </ui:VisualElement>
                         <ui:VisualElement name="rclick-area-to-add-new-action" style="flex-direction: column; flex-grow: 1;" />
                     </ui:VisualElement>
-                    <ui:VisualElement name="properties-container" class="body-panel-container body-panel-container" style="min-width: 220;">
+                    <ui:VisualElement name="properties-container" class="body-panel-container body-panel-container" style="min-width: 295px;">
                         <ui:VisualElement name="header" class="body-panel-header">
                             <ui:Label text="Action Properties" display-tooltip-when-elided="true" name="properties-header-label" />
                         </ui:VisualElement>