diff --git a/gui/wxpython/lmgr/frame.py b/gui/wxpython/lmgr/frame.py
index 0f0b09a0e58..b26d7b476f2 100644
--- a/gui/wxpython/lmgr/frame.py
+++ b/gui/wxpython/lmgr/frame.py
@@ -255,6 +255,13 @@ def show_menu_errors(messages):
             try:
                 x, y = map(int, dim.split(",")[0:2])
                 w, h = map(int, dim.split(",")[2:4])
+                client_disp = wx.ClientDisplayRect()
+                if x == 1:
+                    # Get client display x offset (OS panel)
+                    x = client_disp[0]
+                if y == 1:
+                    # Get client display y offset (OS panel)
+                    y = client_disp[1]
                 self.SetPosition((x, y))
                 self.SetSize((w, h))
             except:
diff --git a/gui/wxpython/main_window/frame.py b/gui/wxpython/main_window/frame.py
index 19fa9802ce9..32abfc032c5 100644
--- a/gui/wxpython/main_window/frame.py
+++ b/gui/wxpython/main_window/frame.py
@@ -177,16 +177,25 @@ def show_menu_errors(messages):
             try:
                 x, y = map(int, dim.split(",")[0:2])
                 w, h = map(int, dim.split(",")[2:4])
+                client_disp = wx.ClientDisplayRect()
+                if x == 1:
+                    # Get client display x offset (OS panel)
+                    x = client_disp[0]
+                if y == 1:
+                    # Get client display y offset (OS panel)
+                    y = client_disp[1]
                 self.SetPosition((x, y))
                 self.SetSize((w, h))
             except Exception:
                 pass
+            self.Layout()
+            self.Fit()
         else:
+            self.Layout()
+            self.Fit()
             # does center (of screen) make sense for lmgr?
             self.Centre()
 
-        self.Layout()
-        self.Fit()
         self.Show()
 
         # load workspace file if requested
diff --git a/gui/wxpython/mapdisp/frame.py b/gui/wxpython/mapdisp/frame.py
index 794ed1dd218..5d26c4b9fc1 100644
--- a/gui/wxpython/mapdisp/frame.py
+++ b/gui/wxpython/mapdisp/frame.py
@@ -1714,16 +1714,26 @@ def __init__(self, parent, giface, id, tree, lmgr, idx, Map, title, **kwargs):
             )
         )
         # use default frame window layout
+        client_disp = wx.ClientDisplayRect()
         if UserSettings.Get(group="general", key="defWindowPos", subkey="enabled"):
             dim = UserSettings.Get(group="general", key="defWindowPos", subkey="dim")
             idx = 4 + idx * 4
             try:
                 x, y = map(int, dim.split(",")[idx : idx + 2])
                 w, h = map(int, dim.split(",")[idx + 2 : idx + 4])
+                if x == 1:
+                    # Get client display x offset (OS panel)
+                    x = client_disp[0]
+                if y == 1:
+                    # Get client display y offset (OS panel)
+                    y = client_disp[1]
                 parent.SetPosition((x, y))
                 parent.SetSize((w, h))
             except Exception:
                 pass
+        else:
+            # Set client display x, y offset (OS panel)
+            parent.SetPosition((client_disp[0], client_disp[1]))
 
         # bindings
         parent.Bind(wx.EVT_CLOSE, self.OnCloseWindow)