symbol editor: fix issue after loading a symbol from a library.

Selected items become invisible.
(similar to the issue fixed by commit b622e3a3f7)
Fixes #14151
https://gitlab.com/kicad/code/kicad/issues/14151

eeschema/symbol_editor/symbol_editor.cpp

@@ -312,6 +312,12 @@ bool SYMBOL_EDIT_FRAME::LoadOneLibrarySymbolAux( LIB_SYMBOL* aEntry, const wxStr
         setSymWatcher( &libId );
     }
 
+    // Let tools add things to the view if necessary
+    if( m_toolManager )
+        m_toolManager->ResetTools( TOOL_BASE::MODEL_RELOAD );
+
+    GetCanvas()->GetView()->UpdateAllItems( KIGFX::ALL );
+
     // Display the document information based on the entry selected just in
     // case the entry is an alias.
     UpdateMsgPanel();