diff --git a/Ember/app.rs b/Ember/app.rs
index 820503d..6968a3d 100644
--- a/Ember/app.rs
+++ b/Ember/app.rs
@@ -49,11 +49,11 @@ impl ApplicationImpl for App {
             // scaled screen (1440 x 940 is 2880 x 1880 pixels at 200 %): the window is then
             // fitted to the work area once it has been placed.
             let weak = window.downgrade();
-            let _ = window.opened(move || {
+            window.opened(move || {
                 if let Some(window) = weak.upgrade() {
                     fit_to_work_area(&window);
                 }
-            });
+            }).detach();
             desktop.set_main_window(Some(window));
         } else if let Some(activity) = lifetime
             .as_ref()
diff --git a/Ember/reader_view.rs b/Ember/reader_view.rs
index 0d889d2..2262ffe 100644
--- a/Ember/reader_view.rs
+++ b/Ember/reader_view.rs
@@ -307,7 +307,7 @@ impl ReaderView {
                         },
                         Duration::from_millis(180),
                         DispatcherPriority::BACKGROUND,
-                    );
+                    ).detach();
                 }
             }
         });
@@ -414,7 +414,7 @@ impl ReaderView {
                 },
                 DispatcherPriority::LOADED,
             );
-        });
+        }).detach();
     }
     fn connect_platform_back(&self) {
         if self.back_handler.borrow().is_some() {
diff --git a/FerroUI b/FerroUI
index c4c4cf8..b753739 160000
--- a/FerroUI
+++ b/FerroUI
@@ -1 +1 @@
-Subproject commit c4c4cf872a3f57166ebb00b343ca4b6c41a55eef
+Subproject commit b753739811c34eba24c86ec383232053e914e42e