Fix column spanning to not be recursive

app/playlists_v3.py

@@ -2373,6 +2373,12 @@ class PlaylistTab(QTableView):
         Implement spanning of cells, initiated by signal
         """
 
+        # Don't set spanning if already in place because that is seen as
+        # a change to the view and thus it refreshes the data which
+        # again calls us here.
+        if self.rowSpan(row, column) == rowSpan and self.columnSpan(row, column) == columnSpan:
+            return
+
         self.setSpan(row, column, rowSpan, columnSpan)
 
     def _track_time_between_rows(