--- o/src/surfaceitem.cpp	2021-08-31 13:41:03.000000000 +0200
+++ p/src/surfaceitem.cpp	2021-09-26 13:58:21.697710636 +0200
@@ -92,9 +92,7 @@
     } else {
         m_windowPixmap->create();
         if (m_windowPixmap->isValid()) {
-            if (m_referencePixmapCounter == 0) {
-                m_previousWindowPixmap.reset();
-            }
+            m_previousWindowPixmap.reset();
             discardQuads();
         }
     }