diff -Nru unity-7.5.0+17.10.20170721/debian/changelog unity-7.5.0+17.10.20170721.1/debian/changelog
--- unity-7.5.0+17.10.20170721/debian/changelog	2017-07-21 08:55:15.000000000 +0000
+++ unity-7.5.0+17.10.20170721.1/debian/changelog	2017-07-21 08:55:16.000000000 +0000
@@ -1,4 +1,4 @@
-unity (7.5.0+17.10.20170721-0ubuntu1) artful; urgency=medium
+unity (7.5.0+17.10.20170721.1-0ubuntu1) artful; urgency=medium
 
   * GLibSignal: allow to block, unblock signals
   * UnitySettings: use glib::Signal blocking for ignoring setting
@@ -7,8 +7,10 @@
     low_gfx value
   * Launcher: disable or reduce most icon effects on lowgfx (LP:
     #1700859)
+  * PanelController: ensure we disconnect from signals on destruction
+    (LP: #1504870)
 
- -- Marco Trevisan (Treviño) <mail@3v1n0.net>  Fri, 21 Jul 2017 01:08:48 +0000
+ -- Marco Trevisan (Treviño) <mail@3v1n0.net>  Fri, 21 Jul 2017 08:53:17 +0000
 
 unity (7.5.0+17.10.20170707-0ubuntu1) artful; urgency=medium
 
diff -Nru unity-7.5.0+17.10.20170721/panel/PanelController.cpp unity-7.5.0+17.10.20170721.1/panel/PanelController.cpp
--- unity-7.5.0+17.10.20170721/panel/PanelController.cpp	2017-07-21 01:07:32.000000000 +0000
+++ unity-7.5.0+17.10.20170721.1/panel/PanelController.cpp	2017-07-21 08:52:29.000000000 +0000
@@ -33,9 +33,8 @@
 
 const char* window_title = "unity-panel";
 
-class Controller::Impl
+struct Controller::Impl : sigc::trackable
 {
-public:
   Impl(Controller*, menu::Manager::Ptr const&, ui::EdgeBarrierController::Ptr const&);
   ~Impl();