Combo: When peeking into the popup window for alignment we check if the window was active, which is more correct. (no known issue in current codebase, but we'll need that change for later)

imgui.cpp

@@ -9230,14 +9230,15 @@ bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboF
 
     // Peak into expected window size so we can position it
     if (ImGuiWindow* popup_window = FindWindowByName(name))
-    {
-        ImVec2 size_contents = CalcSizeContents(popup_window);
-        ImVec2 size_expected = CalcSizeAfterConstraint(popup_window, CalcSizeAutoFit(popup_window, size_contents));
-        if (flags & ImGuiComboFlags_PopupAlignLeft)
-            popup_window->AutoPosLastDirection = ImGuiDir_Left;
-        ImVec2 pos = FindBestWindowPosForPopup(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-        SetNextWindowPos(pos);
-    }
+        if (popup_window->WasActive)
+        {
+            ImVec2 size_contents = CalcSizeContents(popup_window);
+            ImVec2 size_expected = CalcSizeAfterConstraint(popup_window, CalcSizeAutoFit(popup_window, size_contents));
+            if (flags & ImGuiComboFlags_PopupAlignLeft)
+                popup_window->AutoPosLastDirection = ImGuiDir_Left;
+            ImVec2 pos = FindBestWindowPosForPopup(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
+            SetNextWindowPos(pos);
+        }
 
     ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
     if (!Begin(name, NULL, window_flags))