diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89b3e91..68f0bf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [Unreleased]
+
+### Fixed
+- Animation no longer plays multiple times when a new client is addded.
+
 ## [0.2.0] - 2024-03-21
 
 ### Added
@@ -37,6 +42,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - List of sinks will now grow from bottom to top if window is anchored to bottom.
 - Minimal `rustc` version for compilation is now `1.75.0` due to [FileTimes](https://doc.rust-lang.org/std/fs/struct.FileTimes.html) stabilization.
 
+[unreleased]: https://github.com/Elvyria/Mixxc/compare/0.2.0...HEAD
 [0.2.0]: https://github.com/Elvyria/Mixxc/compare/0.1.10...0.2.0
 [0.1.10]: https://github.com/Elvyria/Mixxc/compare/0.1.9...0.1.10
 [0.1.9]: https://github.com/Elvyria/Mixxc/compare/0.1.8...0.1.9
diff --git a/src/app.rs b/src/app.rs
index 364e38c..5df5393 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -5,6 +5,7 @@ use std::sync::Arc;
 use std::time::{Duration, Instant};
 
 use relm4::gtk;
+use relm4::once_cell::sync::OnceCell;
 use relm4::{ComponentParts, ComponentSender, Component, RelmWidgetExt, FactorySender};
 use relm4::factory::FactoryVecDeque;
 use relm4::prelude::{DynamicIndex, FactoryComponent};
@@ -236,18 +237,18 @@ impl FactoryComponent for Slider {
             move |_| fill.queue_resize()
         });
 
-        widgets.root.connect_realize(|root| {
+        widgets.root.add_tick_callback({
             const DELAY: Duration = Duration::from_millis(500);
-            let before: Instant = Instant::now();
+            let before: OnceCell<Instant> = OnceCell::new();
 
-            root.add_tick_callback(move |root, _| {
-                if Instant::now() - before < DELAY {
+            move |root, _| {
+                if Instant::now() - *before.get_or_init(Instant::now) < DELAY {
                     return ControlFlow::Continue
                 }
 
                 root.remove_css_class("new");
                 ControlFlow::Break
-            });
+            }
         });
 
         widgets