diff --git a/src/wx/guiinit.cpp b/src/wx/guiinit.cpp
index 8667b197..80efaa42 100644
--- a/src/wx/guiinit.cpp
+++ b/src/wx/guiinit.cpp
@@ -2813,5 +2813,12 @@ bool MainFrame::BindControls()
     panel->SetFrameTitle();
     // All OK; activate idle loop
     panel->SetExtraStyle(panel->GetExtraStyle() | wxWS_EX_PROCESS_IDLE);
+
+    // Re-adjust size now to nudge some sense into Widgets.
+    panel->AdjustSize(false);
+
+    // Frame initialization is complete.
+    init_complete_ = true;
+
     return true;
 }
diff --git a/src/wx/wxvbam.cpp b/src/wx/wxvbam.cpp
index 59a3b801..08ca7c3e 100644
--- a/src/wx/wxvbam.cpp
+++ b/src/wx/wxvbam.cpp
@@ -930,6 +930,9 @@ void MainFrame::OnMenu(wxContextMenuEvent& event)
 }
 
 void MainFrame::OnMove(wxMoveEvent&) {
+    if (!init_complete_) {
+        return;
+    }
     if (!IsFullScreen() && !IsMaximized()) {
         const wxPoint window_pos = GetScreenPosition();
         OPTION(kGeomWindowX) = window_pos.x;
@@ -954,6 +957,9 @@ void MainFrame::OnMoveEnd(wxMoveEvent&) {
 void MainFrame::OnSize(wxSizeEvent& event)
 {
     wxFrame::OnSize(event);
+    if (!init_complete_) {
+        return;
+    }
     const wxRect window_rect = GetRect();
     const wxPoint window_pos = GetScreenPosition();
 
diff --git a/src/wx/wxvbam.h b/src/wx/wxvbam.h
index 85ec2a05..0bf30d47 100644
--- a/src/wx/wxvbam.h
+++ b/src/wx/wxvbam.h
@@ -356,6 +356,9 @@ private:
     JoystickPoller* jpoll = nullptr;
     // quicker & more accurate than FindFocus() != NULL
     bool focused;
+    // One-time toggle to indicate that this object is fully initialized. This
+    // used to filter events that are sent during initialization.
+    bool init_complete_ = false;
 #ifndef NO_LINK
     const config::OptionsObserver gba_link_observer_;
 #endif