Clipper: Fixed content height declaration slightly mismatching the one of when not using a clipper.

docs/CHANGELOG.txt

@@ -41,6 +41,8 @@ Other Changes:
 - Added IsMouseTripleClicked() function. Tracking multi-click count in IO structure. (#3229) [@kudaba]
 - Modals: fixed issue hovering popups inside a child inside a modal. (#4676, #4527)
 - Fixed IsWindowFocused()/IsWindowHovered() issues with childs inside popups. (#4676)
+- Clipper: Fixed content height declaration slightly mismatching the one of when not using a clipper.
+  (an additional ItemSpacing.y was declared, affecting scrollbar range).
 - Nav: pressing PageUp/PageDown/Home/End when in Menu layer automatically moves back to Main layer.
 - Nav: fixed resizing window from borders setting navigation to Menu layer.
 - Nav: pressing Esc to exit a child window reactivates the Nav highlight if it was disabled by mouse.

imgui.cpp

@@ -2297,7 +2297,7 @@ static void SetCursorPosYAndSetupForPrevLine(float pos_y, float line_height)
     ImGuiWindow* window = g.CurrentWindow;
     float off_y = pos_y - window->DC.CursorPos.y;
     window->DC.CursorPos.y = pos_y;
-    window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, pos_y);
+    window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, pos_y - g.Style.ItemSpacing.y);
     window->DC.CursorPosPrevLine.y = window->DC.CursorPos.y - line_height;  // Setting those fields so that SetScrollHereY() can properly function after the end of our clipper usage.
     window->DC.PrevLineSize.y = (line_height - g.Style.ItemSpacing.y);      // If we end up needing more accurate data (to e.g. use SameLine) we may as well make the clipper have a fourth step to let user process and display the last item in their list.
     if (ImGuiOldColumns* columns = window->DC.CurrentColumns)

imgui.h

@@ -64,7 +64,7 @@ Index of this file:
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
 #define IMGUI_VERSION               "1.86 WIP"
-#define IMGUI_VERSION_NUM           18504
+#define IMGUI_VERSION_NUM           18505
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 #define IMGUI_HAS_TABLE