From f2d8ab5b87f6864320e342ca4386cf17e910fee8 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Sun, 18 Dec 2016 19:40:28 +0100
Subject: [PATCH] Minor fix: don't reselect the 3D plater when the 2D plater is
 already selected

---
 lib/Slic3r/GUI/Plater.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 626564436..3243f9e70 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -1051,7 +1051,10 @@ sub schedule_background_process {
     my ($self) = @_;
     
     if (!$Slic3r::GUI::Settings->{_}{background_processing}) {
-        $self->{preview_notebook}->SetSelection(0);
+        my $sel = $self->{preview_notebook}->GetSelection;
+        if ($sel == $self->{preview3D_page_idx} || $sel == $self->{toolpaths2D_page_idx}) {
+            $self->{preview_notebook}->SetSelection(0);
+        }
     }
     
     if (defined $self->{apply_config_timer}) {