From 652ac99097cd92ee278c1f16ae561e0b3266bbf7 Mon Sep 17 00:00:00 2001
From: JosepMariaPujol <josep.pujol@unity3d.com>
Date: Fri, 12 Dec 2025 15:19:03 +0100
Subject: [PATCH 1/5] Update InputActionsEditorStyles.uss with add button plus
 icon

---
 .../PackageResources/InputActionsEditorStyles.uss      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
index dddbfb9c11..a75b580a15 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
@@ -184,6 +184,16 @@
     -unity-background-scale-mode: scale-to-fit;
 }
 
+.add-button-dark-theme {
+    background-image: resource('d_Toolbar Plus.png');
+    -unity-background-scale-mode: scale-to-fit;
+}
+
+.add-button {
+    background-image: resource('Toolbar Plus.png');
+    -unity-background-scale-mode: scale-to-fit;
+}
+
 .search-field {
     display: none;
     width: 190px;

From 9f0eb2009da0134de9ba7ccd455ffc44711559c0 Mon Sep 17 00:00:00 2001
From: JosepMariaPujol <josep.pujol@unity3d.com>
Date: Fri, 12 Dec 2025 15:30:13 +0100
Subject: [PATCH 2/5] Adding + as an icon rather than text

---
 .../UITKAssetEditor/PackageResources/InputActionsEditor.uxml   | 2 +-
 .../InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
index 829d2448b2..7dacf96399 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
@@ -21,7 +21,7 @@
                 <ui:VisualElement name="action-maps-container" class="body-panel-container actions-container">
                     <ui:VisualElement name="header" class="body-panel-header">
                         <ui:Label text="Action Maps" display-tooltip-when-elided="true" style="flex-grow: 1;" />
-                        <ui:Button text="+" display-tooltip-when-elided="true" name="add-new-action-map-button" style="align-items: auto;" />
+                        <ui:Button display-tooltip-when-elided="true" name="add-new-action-map-button" style="align-items: auto;" />
                     </ui:VisualElement>
                     <ui:VisualElement name="body">
                         <ui:ListView focusable="true" name="action-maps-list-view" />
diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs
index a663a4a81f..5fded27b9a 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs
@@ -2,6 +2,7 @@
 using CmdEvents = UnityEngine.InputSystem.Editor.InputActionsEditorConstants.CommandEvents;
 using System.Collections.Generic;
 using System.Linq;
+using UnityEditor;
 using UnityEngine.UIElements;
 
 namespace UnityEngine.InputSystem.Editor
@@ -65,6 +66,8 @@ public ActionMapsView(VisualElement root, StateContainer stateContainer)
             CreateSelector(Selectors.GetActionMapNames, Selectors.GetSelectedActionMap, (actionMapNames, actionMap, state) => new ViewState(actionMap, actionMapNames, state.GetDisabledActionMaps(actionMapNames.ToList())));
 
             m_AddActionMapButton = root.Q<Button>("add-new-action-map-button");
+            m_AddActionMapButton.AddToClassList(EditorGUIUtility.isProSkin ? "add-button-dark-theme" : "add-button");
+
             m_AddActionMapButton.clicked += AddActionMap;
 
             ContextMenu.GetContextMenuForActionMapsEmptySpace(this, root.Q<VisualElement>("rclick-area-to-add-new-action-map"));

From 80990ef3ff978b1b6300371f3fd0909b448c11d8 Mon Sep 17 00:00:00 2001
From: JosepMariaPujol <josep.pujol@unity3d.com>
Date: Mon, 15 Dec 2025 12:26:07 +0100
Subject: [PATCH 3/5] UI toolkit removing text "+" from input system action
 asset

---
 .../PackageResources/InputActionMapsTreeViewItem.uxml       | 2 +-
 .../PackageResources/InputActionsEditor.uxml                | 6 +++---
 .../Editor/UITKAssetEditor/Views/ActionsTreeView.cs         | 1 +
 .../Editor/UITKAssetEditor/Views/PropertiesView.cs          | 5 ++++-
 4 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionMapsTreeViewItem.uxml b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionMapsTreeViewItem.uxml
index a26d706df2..8a903683ab 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionMapsTreeViewItem.uxml
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionMapsTreeViewItem.uxml
@@ -5,6 +5,6 @@
             <ui:TextField picking-mode="Ignore" name="rename-text-field" is-delayed="true" focusable="true" class="unity-input-actions-editor-hidden" style="visibility: visible; flex-shrink: 1;" />
             <ui:Label text="binding-name" display-tooltip-when-elided="true" name="name" style="flex-grow: 1; justify-content: center; align-items: stretch; margin-left: 4px; -unity-font-style: normal;" />
         </ui:VisualElement>
-        <ui:Button text="+" display-tooltip-when-elided="true" enable-rich-text="false" name="add-new-binding-button" style="opacity: 1; background-color: rgba(255, 255, 255, 0); border-left-color: rgba(255, 255, 255, 0); border-right-color: rgba(255, 255, 255, 0); border-top-color: rgba(255, 255, 255, 0); border-bottom-color: rgba(255, 255, 255, 0); display: none; align-items: flex-end; align-self: auto; flex-direction: row-reverse;" />
+        <ui:Button display-tooltip-when-elided="true" enable-rich-text="false" name="add-new-binding-button" style="opacity: 1; background-color: rgba(255, 255, 255, 0); border-left-color: rgba(255, 255, 255, 0); border-right-color: rgba(255, 255, 255, 0); border-top-color: rgba(255, 255, 255, 0); border-bottom-color: rgba(255, 255, 255, 0); display: none; align-items: flex-end; align-self: auto; flex-direction: row-reverse;" />
     </ui:VisualElement>
 </ui:UXML>
diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
index 7dacf96399..80e0c183e1 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditor.uxml
@@ -21,18 +21,18 @@
                 <ui:VisualElement name="action-maps-container" class="body-panel-container actions-container">
                     <ui:VisualElement name="header" class="body-panel-header">
                         <ui:Label text="Action Maps" display-tooltip-when-elided="true" style="flex-grow: 1;" />
-                        <ui:Button display-tooltip-when-elided="true" name="add-new-action-map-button" style="align-items: auto;" />
+                        <ui:Button display-tooltip-when-elided="true" name="add-new-action-map-button" style="align-items: auto; background-color: rgba(255, 255, 255, 0);" />
                     </ui:VisualElement>
                     <ui:VisualElement name="body">
                         <ui:ListView focusable="true" name="action-maps-list-view" />
                     </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="320" style="height: auto; min-width: 450px;" view-data-key="actions-editor-splitter-2">
+                <ui:TwoPaneSplitView name="actions-and-properties-split-view" fixed-pane-index="1" fixed-pane-initial-dimension="320" view-data-key="actions-editor-splitter-2" 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" />
-                            <ui:Button text="+" display-tooltip-when-elided="true" name="add-new-action-button" style="align-items: auto;" />
+                            <ui:Button display-tooltip-when-elided="true" name="add-new-action-button" style="align-items: auto; background-color: rgba(188, 188, 188, 0);" />
                         </ui:VisualElement>
                         <ui:VisualElement name="body">
                             <ui:TreeView view-data-key="unity-tree-view" focusable="true" name="actions-tree-view" show-border="false" reorderable="true" show-alternating-row-backgrounds="None" fixed-item-height="20" />
diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionsTreeView.cs b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionsTreeView.cs
index f00cff4c0f..bdf9447dfc 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionsTreeView.cs
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionsTreeView.cs
@@ -32,6 +32,7 @@ public ActionsTreeView(VisualElement root, StateContainer stateContainer)
         {
             m_ActionMapsListView = root.Q<ListView>("action-maps-list-view");
             m_AddActionButton = root.Q<Button>("add-new-action-button");
+            m_AddActionButton.AddToClassList(EditorGUIUtility.isProSkin ? "add-button-dark-theme" : "add-button");
             m_PropertiesScrollview = root.Q<ScrollView>("properties-scrollview");
             m_ActionsTreeView = root.Q<TreeView>("actions-tree-view");
             //assign unique viewDataKey to store treeView states like expanded/collapsed items - make it unique to avoid conflicts with other TreeViews
diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/PropertiesView.cs b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/PropertiesView.cs
index 2165a7e272..679c662888 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/PropertiesView.cs
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/PropertiesView.cs
@@ -39,6 +39,8 @@ public PropertiesView(VisualElement root, StateContainer stateContainer)
             if (addInteractionButton == null)
             {
                 addInteractionButton = CreateAddButton(interactionsToggle, "add-new-interaction-button");
+                addInteractionButton.AddToClassList(EditorGUIUtility.isProSkin ? "add-binging-button-dark-theme" : "add-binging-button");
+
                 new ContextualMenuManipulator(_ => {}){target = addInteractionButton, activators = {new ManipulatorActivationFilter(){button = MouseButton.LeftMouse}}};
             }
             var processorToggle = processorsFoldout.Q<Toggle>();
@@ -46,6 +48,8 @@ public PropertiesView(VisualElement root, StateContainer stateContainer)
             if (addProcessorButton == null)
             {
                 addProcessorButton = CreateAddButton(processorToggle, "add-new-processor-button");
+                addProcessorButton.AddToClassList(EditorGUIUtility.isProSkin ? "add-binging-button-dark-theme" : "add-binging-button");
+
                 new ContextualMenuManipulator(_ => {}){target = addProcessorButton, activators = {new ManipulatorActivationFilter(){button = MouseButton.LeftMouse}}};
             }
         }
@@ -53,7 +57,6 @@ public PropertiesView(VisualElement root, StateContainer stateContainer)
         private TextElement CreateAddButton(Toggle toggle, string name)
         {
             var addButton = new Button();
-            addButton.text = "+";
             addButton.name = name;
             addButton.focusable = false;
             #if UNITY_EDITOR_OSX

From 5a5304ea2268f72b8d262f016a64dbdf20800e42 Mon Sep 17 00:00:00 2001
From: JosepMariaPujol <josep.pujol@unity3d.com>
Date: Mon, 15 Dec 2025 13:02:57 +0100
Subject: [PATCH 4/5] Fixing uniform icon dimensions

---
 .../PackageResources/InputActionsEditorStyles.uss         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
index a75b580a15..3d9e87a5d6 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
+++ b/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/PackageResources/InputActionsEditorStyles.uss
@@ -175,21 +175,29 @@
 }
 
 .add-binging-button-dark-theme {
+    width: 14px;
+    height: 14px;
     background-image: resource('d_Toolbar Plus More.png');
     -unity-background-scale-mode: scale-to-fit;
 }
 
 .add-binging-button {
+    width: 14px;
+    height: 14px;
     background-image: resource('Toolbar Plus More.png');
     -unity-background-scale-mode: scale-to-fit;
 }
 
 .add-button-dark-theme {
+    width: 18px;
+    height: 18px;
     background-image: resource('d_Toolbar Plus.png');
     -unity-background-scale-mode: scale-to-fit;
 }
 
 .add-button {
+    width: 18px;
+    height: 18px;
     background-image: resource('Toolbar Plus.png');
     -unity-background-scale-mode: scale-to-fit;
 }

From eaeef79c637beb6c8dbf91f2a80077f94cdf5d93 Mon Sep 17 00:00:00 2001
From: josepmariapujol-unity
 <59828124+josepmariapujol-unity@users.noreply.github.com>
Date: Mon, 15 Dec 2025 15:20:55 +0100
Subject: [PATCH 5/5] Changelog entry fixed add buttons

---
 Packages/com.unity.inputsystem/CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Packages/com.unity.inputsystem/CHANGELOG.md b/Packages/com.unity.inputsystem/CHANGELOG.md
index fe83a9780c..b244ce401f 100644
--- a/Packages/com.unity.inputsystem/CHANGELOG.md
+++ b/Packages/com.unity.inputsystem/CHANGELOG.md
@@ -12,6 +12,7 @@ however, it has to be formatted properly to pass verification tests.
 
 ### Fixed
 
+- Fixed add buttons use add icon in input actions window (ISX-2340)
 - Fixed warnings being generated on Unity 6.4 and 6.5. (ISX-2395).
 - Fixed extra empty lines being displayed in the control binding list when mouse buttons are pressed [ISXB-1677](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1677)