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<!DOCTYPE html>
<html lang="en" class="reftest-wait" reftest-async-scroll>
<meta charset="utf-8">
<title>Bug 1164227 - Testcase for the invalid region simplification bug</title>
<style>
#scrollbox {
width: 400px;
height: 500px;
overflow: auto;
margin: 80px;
border: 1px solid black;
}
.contents {
height: 600px;
background: white;
padding: 20px;
position: relative;
}
.boxes > div {
box-sizing: border-box;
width: 10px;
height: 10px;
border: 1px solid black;
float: left;
margin-left: -2px;
}
.boxes > div:nth-child(odd) {
transform: translateY(500px);
}
.reftest-no-paint {
position: absolute;
top: 250px;
left: 30px;
width: 200px;
height: 50px;
border: 1px solid red;
}
</style>
<div id="scrollbox"
reftest-displayport-x="0"
reftest-displayport-y="0"
reftest-displayport-w="400"
reftest-displayport-h="500">
<div class="contents">
<div class="boxes">
<div style="margin-top: 0px"></div>
<div style="margin-top: 1px"></div>
<div style="margin-top: 2px"></div>
<div style="margin-top: 3px"></div>
<div style="margin-top: 4px"></div>
<div style="margin-top: 5px"></div>
<div style="margin-top: 6px"></div>
<div style="margin-top: 7px"></div>
<div style="margin-top: 8px"></div>
<div style="margin-top: 9px"></div>
<div style="margin-top: 10px"></div>
<div style="margin-top: 11px"></div>
<div style="margin-top: 12px"></div>
<div style="margin-top: 13px"></div>
<div style="margin-top: 14px"></div>
<div style="margin-top: 15px"></div>
<div style="margin-top: 16px"></div>
<div style="margin-top: 17px"></div>
<div style="margin-top: 18px"></div>
<div style="margin-top: 19px"></div>
<div style="margin-top: 20px"></div>
<div style="margin-top: 21px"></div>
<div style="margin-top: 22px"></div>
<div style="margin-top: 23px"></div>
<div style="margin-top: 24px"></div>
<div style="margin-top: 25px"></div>
<div style="margin-top: 26px"></div>
<div style="margin-top: 27px"></div>
<div style="margin-top: 28px"></div>
<div style="margin-top: 29px"></div>
<div style="margin-top: 30px"></div>
<div style="margin-top: 31px"></div>
<div style="margin-top: 32px"></div>
<div style="margin-top: 33px"></div>
<div style="margin-top: 34px"></div>
<div style="margin-top: 35px"></div>
<div style="margin-top: 36px"></div>
<div style="margin-top: 37px"></div>
<div style="margin-top: 38px"></div>
<div style="margin-top: 39px"></div>
</div>
<div class="reftest-no-paint"></div>
</div>
</div>
<script>
var scrollbox = document.querySelector("#scrollbox");
scrollbox.scrollTop = 100;
window.addEventListener("MozReftestInvalidate", function (e) {
scrollbox.scrollTop = 0;
document.documentElement.removeAttribute("class");
});
</script>
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