diff -r c89fc366bebd -r 0ffb41625592 controls/DebugVariablePanel/DebugVariableTextViewer.py
--- a/controls/DebugVariablePanel/DebugVariableTextViewer.py	Thu Sep 02 21:36:29 2021 +0200
+++ b/controls/DebugVariablePanel/DebugVariableTextViewer.py	Thu Sep 02 22:18:14 2021 +0200
@@ -195,7 +195,7 @@
 
         # Create buffered DC for drawing in panel
         width, height = self.GetSize()
-        bitmap = wx.EmptyBitmap(width, height)
+        bitmap = wx.Bitmap(width, height)
         dc = wx.BufferedDC(wx.PaintDC(self), bitmap)
         dc.Clear()
 
@@ -203,8 +203,6 @@
         # rendering
         gc = wx.GCDC(dc)
 
-        gc.BeginDrawing()
-
         # Get first item
         item = self.ItemsDict.values()[0]
 
@@ -232,8 +230,6 @@
         # Draw other Viewer common elements
         self.DrawCommonElements(gc)
 
-        gc.EndDrawing()
-
     def OnLeftDown(self, event):
         """
         Function called when mouse left button is pressed
@@ -252,7 +248,7 @@
         # start a move drag'n drop of item variable
         x, y = event.GetPosition()
         item_path_bbox = wx.Rect(20, (height - h) / 2, w, h)
-        if item_path_bbox.InsideXY(x, y):
+        if item_path_bbox.Contains(x, y):
             self.ShowButtons(False)
             data = wx.TextDataObject(str((item.GetVariable(), "debug", "move")))
             dragSource = wx.DropSource(self)