From 686311f0b40b8e7d3281d0de34287f17bc7442e1 Mon Sep 17 00:00:00 2001
From: Jon Evans <jon@craftyjon.com>
Date: Thu, 3 Sep 2020 18:05:20 -0400
Subject: [PATCH] Make sure to show newly-enabled layers when changing board
 setup

Fixes https://gitlab.com/kicad/code/kicad/-/issues/5478
---
 pcbnew/pcb_edit_frame.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pcbnew/pcb_edit_frame.cpp b/pcbnew/pcb_edit_frame.cpp
index 71e70e2179..e3804097e5 100644
--- a/pcbnew/pcb_edit_frame.cpp
+++ b/pcbnew/pcb_edit_frame.cpp
@@ -1187,6 +1187,12 @@ void PCB_EDIT_FRAME::UpdateUserInterface()
     for( LSEQ seq = LSET::AllLayersMask().Seq(); seq; ++seq )
         layerEnum.Map( *seq, GetBoard()->GetLayerName( *seq ) );
 
+    // Sync visibility with canvas
+    KIGFX::VIEW* view = GetCanvas()->GetView();
+
+    for( PCB_LAYER_ID layer : GetBoard()->GetVisibleLayers().Seq() )
+        view->SetLayerVisible( layer, true );
+
     // Stackup and/or color theme may have changed
     m_appearancePanel->OnBoardChanged();
 }