From d75f5f92313641a77e533f8254ab4e14aced86dc Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Thu, 19 Feb 2026 10:41:07 +0100
Subject: [PATCH] don't play animation when startTime is set to null

---
 src/browser/webapi/animation/Animation.zig | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/browser/webapi/animation/Animation.zig b/src/browser/webapi/animation/Animation.zig
index 7c2e8839..4daaa8d5 100644
--- a/src/browser/webapi/animation/Animation.zig
+++ b/src/browser/webapi/animation/Animation.zig
@@ -151,6 +151,12 @@ pub fn getStartTime(self: *const Animation) ?f64 {
 
 pub fn setStartTime(self: *Animation, value: ?f64, page: *Page) !void {
     self._startTime = value;
+
+    // if the startTime is null, don't play the animation.
+    if (value == null) {
+        return;
+    }
+
     return self.play(page);
 }