From 8c77f4763854d33255d61f7a7336c229dad080d7 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Tue, 2 May 2017 17:21:16 +0200
Subject: [PATCH] Fixed regression: no processing with background processing
 and auto-center parts enabled. #3862

---
 lib/Slic3r/GUI/Plater.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index a693ad47b..2cd8e52af 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -1502,7 +1502,7 @@ sub pause_background_process {
         return 1;
     } elsif (defined $self->{apply_config_timer} && $self->{apply_config_timer}->IsRunning) {
         $self->{apply_config_timer}->Stop;
-        return 1;
+        return 0;  # we didn't actually pause any running thread; need to reschedule
     }
     
     return 0;