ButtonBehavior, Selectable: made low-level ImGuiButtonFlags_PressedOnRelease not explicitely avoid taking current active id. ImGuiButtonFlags_NoHoldingActiveId may be used for that.

Ditto for ImGuiSelectableFlags_SelectOnRelease, ImGuiSelectableFlags_NoHoldingActiveId. All internals.
Toward #9312

docs/CHANGELOG.txt

@@ -137,6 +137,11 @@ Other Changes:
   - Fixed GetForegroundDrawList()/GetBackgroundDrawList() per-viewport buffers not being
     collected when unused for io.ConfigMemoryCompactTimer amount of time. (#9303)
 - Demo: fixed IMGUI_DEMO_MARKER locations for examples applets. (#9261, #3689) [@pthom]
+- Internals:
+  - ButtonBehavior: fixed internal/low-level ImGuiButtonFlags_PressedOnRelease
+    (as well as equivalent ImGuiSelectableFlags_SelectOnRelease for Selectable) from
+    not taking current active id. ImGuiButtonFlags_NoHoldingActiveID allows that.
+    This was pretty sure only used internally by MenuItem().
 - Backends:
   - DirectX9, OpenGL2, OpenGL3, Metal, SDLGPU3, SDLRenderer2, SDLRenderer3: fixed easy-to-fix
     issues in code assuming ImTextureID_Invalid is always defined to 0. (#9295, #9310)

imgui.h

@@ -30,7 +30,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
 #define IMGUI_VERSION       "1.92.7 WIP"
-#define IMGUI_VERSION_NUM   19266
+#define IMGUI_VERSION_NUM   19267
 #define IMGUI_HAS_TABLE             // Added BeginTable() - from IMGUI_VERSION_NUM >= 18000
 #define IMGUI_HAS_TEXTURES          // Added ImGuiBackendFlags_RendererHasTextures - from IMGUI_VERSION_NUM >= 19198
 

imgui_internal.h

@@ -1033,7 +1033,7 @@ enum ImGuiButtonFlagsPrivate_
     ImGuiButtonFlags_PressedOnClick         = 1 << 4,   // return true on click (mouse down event)
     ImGuiButtonFlags_PressedOnClickRelease  = 1 << 5,   // [Default] return true on click + release on same item <-- this is what the majority of Button are using
     ImGuiButtonFlags_PressedOnClickReleaseAnywhere = 1 << 6, // return true on click + release even if the release event is not done while hovering the item
-    ImGuiButtonFlags_PressedOnRelease       = 1 << 7,   // return true on release (default requires click+release)
+    ImGuiButtonFlags_PressedOnRelease       = 1 << 7,   // return true on release (default requires click+release). Prior to 2026/03/20 this implied ImGuiButtonFlags_NoHoldingActiveId but they are separate now.
     ImGuiButtonFlags_PressedOnDoubleClick   = 1 << 8,   // return true on double-click (default requires click+release)
     ImGuiButtonFlags_PressedOnDragDropHold  = 1 << 9,   // return true when held into while we are drag and dropping another item (used by e.g. tree nodes, collapsing headers)
     //ImGuiButtonFlags_Repeat               = 1 << 10,  // hold to repeat -> use ImGuiItemFlags_ButtonRepeat instead.

imgui_widgets.cpp

@@ -653,6 +653,14 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
                         FocusWindow(window, ImGuiFocusRequestFlags_RestoreFocusedChild); // Still need to focus and bring to front, but try to avoid losing NavId when navigating a child
                     }
                 }
+                if (flags & ImGuiButtonFlags_PressedOnRelease)
+                {
+                    // FIXME: Traditionally ImGuiButtonFlags_PressedOnRelease never took ActiveId. Adding it in 2026-03-20 since ImGuiButtonFlags_NoHoldingActiveId can always be added.
+                    // We don't yet perform an explicit ClearActiveID() to reduce scope of change, but this possibility could be investigated.
+                    if (!(flags & ImGuiButtonFlags_NoHoldingActiveId))
+                        SetActiveID(id, window); // Hold on ID
+                    g.ActiveIdMouseButton = (ImS8)mouse_button_clicked;
+                }
             }
             if (flags & ImGuiButtonFlags_PressedOnRelease)
             {
@@ -9458,7 +9466,7 @@ bool ImGui::MenuItemEx(const char* label, const char* icon, const char* shortcut
         BeginDisabled();
 
     // We use ImGuiSelectableFlags_NoSetKeyOwner to allow down on one menu item, move, up on another.
-    const ImGuiSelectableFlags selectable_flags = ImGuiSelectableFlags_SelectOnRelease | ImGuiSelectableFlags_NoSetKeyOwner | ImGuiSelectableFlags_SetNavIdOnHover;
+    const ImGuiSelectableFlags selectable_flags = ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_SelectOnRelease | ImGuiSelectableFlags_NoSetKeyOwner | ImGuiSelectableFlags_SetNavIdOnHover;
     const ImGuiMenuColumns* offsets = &window->DC.MenuColumns;
     if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
     {