Tooltips, Drag and Drop: Fixed an issue where the fallback drag and d…

…rop payload tooltip appeared during drag and drop release.

E.g. it would otherwise appear when releasing a color button payload.

docs/CHANGELOG.txt

@@ -71,6 +71,8 @@ Other changes:
 - Scrollbar: Shift+Click scroll to clicked location (pre-1.90.8 default). (#8002, #7328)
 - Scrollbar: added io.ConfigScrollbarScrollByPage setting (default to true). (#8002, #7328)
   Set io.ConfigScrollbarScrollByPage=false to enforce always scrolling to clicked location.
+- Tooltips, Drag and Drop: Fixed an issue where the fallback drag and drop payload tooltip
+  appeared during drag and drop release.
 - Backends: SDL3: Update for API changes: SDL_bool removal. SDL_INIT_TIMER removal.
 - Backends: WebGPU: Fixed DAWN api change using WGPUStringView in WGPUShaderSourceWGSL.
   (#8009, #8010) [@blitz-research]

imgui.cpp

@@ -5521,7 +5521,7 @@ void ImGui::EndFrame()
     // in the BeginDragDropSource() block of the dragged item, you can submit them from a safe single spot
     // (e.g. end of your item loop, or before EndFrame) by reading payload data.
     // In the typical case, the contents of drag tooltip should be possible to infer solely from payload data.
-    if (g.DragDropActive && g.DragDropSourceFrameCount < g.FrameCount && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
+    if (g.DragDropActive && g.DragDropSourceFrameCount + 1 < g.FrameCount && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
     {
         g.DragDropWithinSource = true;
         SetTooltip("...");