From e317d079e75ce9c68dc2c834d9b7a805c557cd87 Mon Sep 17 00:00:00 2001
From: jfa <jfa@opencascade.com>
Date: Wed, 3 Feb 2021 15:33:11 +0300
Subject: [PATCH] Fix pb with broken presentations in VTK viewer

---
 src/LightApp/LightApp_Application.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/LightApp/LightApp_Application.cxx b/src/LightApp/LightApp_Application.cxx
index f28b5b14f..084cfad81 100644
--- a/src/LightApp/LightApp_Application.cxx
+++ b/src/LightApp/LightApp_Application.cxx
@@ -5247,8 +5247,9 @@ void LightApp_Application::updatePresentations( const QString& theComponent,
             if ( aVM ) {
               SALOME_View* aView = dynamic_cast<SALOME_View*>(aVM);
               if ( aView ) {
-                if ( aDisplayer->IsDisplayed( anEntry, aView ) ) {
-                  aDisplayer->Erase( anEntry, false, false, aView );
+                bool isDisp = aDisplayer->IsDisplayed( anEntry, aView );
+                aDisplayer->Erase( anEntry, true, false, aView );
+                if ( isDisp ) {
                   aDisplayer->Display( anEntry, false, aView );
                 }
               }
-- 
2.39.2