Fix #21054: No entrance style selected by default in track designer

distribution/changelog.txt

@@ -5,6 +5,7 @@
 - Fix: [#20255] Images from the last hovered-over coaster in the object selection are not freed.
 - Fix: [#20616] Confirmation button in the track designer’s quit prompt has the wrong text.
 - Fix: [#20628] Moving caret using Ctrl+left can move too far when using a multibyte grapheme.
+- Fix: [#21054] “No entrance” style is selected by default in the track designer.
 - Fix: [#21145] [Plugin] setInterval/setTimeout handle conflict.
 - Fix: [#21157] [Plugin] Widgets do not redraw correctly when updating disabled or visibility state. 
 - Fix: [#21158] [Plugin] Potential crash using setInterval/setTimeout within the callback.

src/openrct2/EditorObjectSelectionSession.cpp

@@ -483,6 +483,14 @@ void FinishObjectSelection()
     {
         SetEveryRideTypeInvented();
         SetEveryRideEntryInvented();
+
+        auto& objManager = OpenRCT2::GetContext()->GetObjectManager();
+        gLastEntranceStyle = objManager.GetLoadedObjectEntryIndex("rct2.station.plain");
+        if (gLastEntranceStyle == OBJECT_ENTRY_INDEX_NULL)
+        {
+            gLastEntranceStyle = 0;
+        }
+
         gEditorStep = EditorStep::RollercoasterDesigner;
         GfxInvalidateScreen();
     }