Tabs: docking nodes use ImGuiTabBarFlags_FittingPolicyMixed. (explicit default, solely for discoverability). (#3421, #8800)

imgui.cpp

@@ -19030,7 +19030,8 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
 
     // Begin tab bar
     ImGuiTabBarFlags tab_bar_flags = ImGuiTabBarFlags_Reorderable | ImGuiTabBarFlags_AutoSelectNewTabs; // | ImGuiTabBarFlags_NoTabListScrollingButtons);
-    tab_bar_flags |= ImGuiTabBarFlags_SaveSettings | ImGuiTabBarFlags_DockNode;// | ImGuiTabBarFlags_FittingPolicyScroll;
+    tab_bar_flags |= ImGuiTabBarFlags_SaveSettings | ImGuiTabBarFlags_DockNode;
+    tab_bar_flags |= ImGuiTabBarFlags_FittingPolicyMixed; // Enforce default policy. Since 1.92.2 this is now reasonable. May expose later if needed. (#8800, #3421)
     tab_bar_flags |= ImGuiTabBarFlags_DrawSelectedOverline;
     if (!host_window->Collapsed && is_focused)
         tab_bar_flags |= ImGuiTabBarFlags_IsFocused;