diff --git a/mozilla/layout/html/tests/block/bugs/4519.html b/mozilla/layout/html/tests/block/bugs/4519.html
new file mode 100644
index 00000000000..e77a6319b41
--- /dev/null
+++ b/mozilla/layout/html/tests/block/bugs/4519.html
@@ -0,0 +1,112 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
+
+<title>bug 4519</title>
+
+<style type="text/css">
+
+div {
+  border: medium solid green;
+  margin: 40px;
+}
+
+div.two, div.four {
+  width: 300px;
+  height: 20px;
+}
+
+div.three, div.four {
+  position: relative;
+}
+
+p {
+  margin: 0 20px;
+  position: relative;
+}
+
+p.one {
+  top: -20px;
+  left: -20px;
+}
+
+p.two {
+  top: 20px;
+  left: 20px;
+}
+
+p.three {
+  bottom: -20px;
+  right: -20px;
+}
+
+p.four {
+  bottom: 20px;
+  right: 20px;
+}
+
+</style>
+
+<div class="one"><p class="one">This is some text.</p></div>
+<div class="one"><p class="two">This is some text.</p></div>
+<div class="one"><p class="three">This is some text.</p></div>
+<div class="one"><p class="four">This is some text.</p></div>
+<div class="two"><p class="one">This is some text.</p></div>
+<div class="two"><p class="two">This is some text.</p></div>
+<div class="two"><p class="three">This is some text.</p></div>
+<div class="two"><p class="four">This is some text.</p></div>
+<div class="three"><p class="one">This is some text.</p></div>
+<div class="three"><p class="two">This is some text.</p></div>
+<div class="three"><p class="three">This is some text.</p></div>
+<div class="three"><p class="four">This is some text.</p></div>
+<div class="four"><p class="one">This is some text.</p></div>
+<div class="four"><p class="two">This is some text.</p></div>
+<div class="four"><p class="three">This is some text.</p></div>
+<div class="four"><p class="four">This is some text.</p></div>
+
+<div class="one">
+  <p class="one">This is some text.</p>
+</div>
+<div class="one">
+  <p class="two">This is some text.</p>
+</div>
+<div class="one">
+  <p class="three">This is some text.</p>
+</div>
+<div class="one">
+  <p class="four">This is some text.</p>
+</div>
+<div class="two">
+  <p class="one">This is some text.</p>
+</div>
+<div class="two">
+  <p class="two">This is some text.</p>
+</div>
+<div class="two">
+  <p class="three">This is some text.</p>
+</div>
+<div class="two">
+  <p class="four">This is some text.</p>
+</div>
+<div class="three">
+  <p class="one">This is some text.</p>
+</div>
+<div class="three">
+  <p class="two">This is some text.</p>
+</div>
+<div class="three">
+  <p class="three">This is some text.</p>
+</div>
+<div class="three">
+  <p class="four">This is some text.</p>
+</div>
+<div class="four">
+  <p class="one">This is some text.</p>
+</div>
+<div class="four">
+  <p class="two">This is some text.</p>
+</div>
+<div class="four">
+  <p class="three">This is some text.</p>
+</div>
+<div class="four">
+  <p class="four">This is some text.</p>
+</div>
diff --git a/mozilla/layout/html/tests/block/bugs/file_list.txt b/mozilla/layout/html/tests/block/bugs/file_list.txt
index 6c2e30097c2..baa71548f7f 100644
--- a/mozilla/layout/html/tests/block/bugs/file_list.txt
+++ b/mozilla/layout/html/tests/block/bugs/file_list.txt
@@ -1,5 +1,6 @@
 file:///s:/mozilla/layout/html/tests/block/bugs/4324.html
 file:///s:/mozilla/layout/html/tests/block/bugs/4515.html
+file:///s:/mozilla/layout/html/tests/block/bugs/4519.html
 file:///s:/mozilla/layout/html/tests/block/bugs/4677.html
 file:///s:/mozilla/layout/html/tests/block/bugs/4803.html
 file:///s:/mozilla/layout/html/tests/block/bugs/4956.html
