diff --git a/src/controls.js b/src/controls.js
index 308d5b12..377f830a 100644
--- a/src/controls.js
+++ b/src/controls.js
@@ -463,7 +463,7 @@ class ClapperControls extends Gtk.Box
         debug(`changing chapter visibility to: ${isVisible}`);
 
         this[`chapter${type}Id`] = GLib.idle_add(
-            GLib.PRIORITY_DEFAULT_IDLE,
+            GLib.PRIORITY_DEFAULT_IDLE + 20,
             () => {
                 if(isVisible) {
                     const [start, end] = this.positionScale.get_slider_range();