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<!DOCTYPE html>
<html class="test-wait">
<title>Tests that scrolling doesn't crash renderer when scroller's content no longer overflows</title>
<link rel="author" href="mailto:xiaochengh@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/">
<style>
#scroller {
margin-top: 200px;
height: 200px;
overflow-y: scroll;
}
#anchor {
anchor-name: --a;
}
#spacer {
height: 400px;
}
#target {
position: fixed;
top: anchor(--a bottom);
left: anchor(--a left);
position-anchor: --a;
}
</style>
<div id="scroller">
<div id="spacer"></div>
<div id="anchor">anchor</div>
</div>
<div id="target">target</div>
<script type="module">
const raf = () => new Promise(resolve => requestAnimationFrame(resolve));
await raf();
await raf();
spacer.style.height = '0';
// Force paint property update on target in the same frame
target.style.transform = 'scale(1)';
document.documentElement.classList.remove('test-wait');
</script>
</html>
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