Tab Bar: Fixed a small bug where closing a tab that is not selected would leave a tab hole for a frame.

docs/CHANGELOG.txt

@@ -81,6 +81,7 @@ Other Changes:
   and amends the change done in 1.76 which only affected cases were _OpenOnArrow flag was set.
   (This is also necessary to support full multi/range-select/drag and drop operations.)
 - Tab Bar: Keep tab item close button visible while dragging a tab (independent of hovering state).
+- Tab Bar: Fixed a small bug where closing a tab that is not selected would leave a tab hole for a frame.
 - Tab Bar: Fixed a small bug where toggling a tab bar from Reorderable to not Reorderable would leave
   tabs reordered in the tab list popup. [@Xipiryon]
 - Columns: Fix inverted ClipRect being passed to renderer when using certain primitives inside of

imgui_widgets.cpp

@@ -7148,17 +7148,22 @@ void ImGui::TabBarRemoveTab(ImGuiTabBar* tab_bar, ImGuiID tab_id)
 // Called on manual closure attempt
 void ImGui::TabBarCloseTab(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
 {
-    if ((tab_bar->VisibleTabId == tab->ID) && !(tab->Flags & ImGuiTabItemFlags_UnsavedDocument))
+    if (!(tab->Flags & ImGuiTabItemFlags_UnsavedDocument))
     {
         // This will remove a frame of lag for selecting another tab on closure.
         // However we don't run it in the case where the 'Unsaved' flag is set, so user gets a chance to fully undo the closure
-        tab->LastFrameVisible = -1;
-        tab_bar->SelectedTabId = tab_bar->NextSelectedTabId = 0;
+        tab->WantClose = true;
+        if (tab_bar->VisibleTabId == tab->ID)
+        {
+            tab->LastFrameVisible = -1;
+            tab_bar->SelectedTabId = tab_bar->NextSelectedTabId = 0;
+        }
     }
-    else if ((tab_bar->VisibleTabId != tab->ID) && (tab->Flags & ImGuiTabItemFlags_UnsavedDocument))
+    else
     {
-        // Actually select before expecting closure
-        tab_bar->NextSelectedTabId = tab->ID;
+        // Actually select before expecting closure attempt (on an UnsavedDocument tab user is expect to e.g. show a popup)
+        if (tab_bar->VisibleTabId != tab->ID)
+            tab_bar->NextSelectedTabId = tab->ID;
     }
 }