Fixed an inconsistency between IsItemHovered() and internal hovering check, where IsItemHovered() would return true if mouse was first clicked on the background of a non-moveable window. (#8877)

docs/CHANGELOG.txt

@@ -49,6 +49,12 @@ Breaking Changes:
 
 Other Changes:
 
+- Fixed an inconsistency between IsItemHovered() and internal hovering check,
+  where IsItemHovered() would return true to mouse was first clicked on the
+  background of a non-moveable window then moved over the item or button.
+  Note that while it is consistent with other logic, there is a possibility
+  that some third-party code may accidentally relied on this.
+  (#8877) [@achabense, @ocornut]
 - Fonts: fixed an issue when a font using MergeMode has a reference size
   specified but the target font doesn't. Usually either all fonts should
   have a reference size (only required when specifying e.g. GlyphOffset),

imgui.cpp

@@ -4656,7 +4656,6 @@ static ImGuiHoveredFlags ApplyHoverFlagsForTooltip(ImGuiHoveredFlags user_flags,
 }
 
 // This is roughly matching the behavior of internal-facing ItemHoverable()
-// - we allow hovering to be true when ActiveId==window->MoveID, so that clicking on non-interactive items such as a Text() item still returns true with IsItemHovered()
 // - this should work even for non-interactive items that have no ID, so we cannot use LastItemId
 bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
 {
@@ -4698,8 +4697,7 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
         const ImGuiID id = g.LastItemData.ID;
         if ((flags & ImGuiHoveredFlags_AllowWhenBlockedByActiveItem) == 0)
             if (g.ActiveId != 0 && g.ActiveId != id && !g.ActiveIdAllowOverlap)
-                if (g.ActiveId != window->MoveId)
-                    return false;
+                return false;
 
         // Test if interactions on this window are blocked by an active popup or modal.
         // The ImGuiHoveredFlags_AllowWhenBlockedByPopup flag will be tested here.

imgui.h

@@ -29,7 +29,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
 #define IMGUI_VERSION       "1.92.2 WIP"
-#define IMGUI_VERSION_NUM   19214
+#define IMGUI_VERSION_NUM   19215
 #define IMGUI_HAS_TABLE             // Added BeginTable() - from IMGUI_VERSION_NUM >= 18000
 #define IMGUI_HAS_TEXTURES          // Added ImGuiBackendFlags_RendererHasTextures - from IMGUI_VERSION_NUM >= 19198