chromium/third_party/blink/web_tests/editing/inserting/4840662.html

<p>This tests insertion before/after links that are also display:block.  Insertion before/after display:block links should go inside the links so that text is inserted in the expected paragraph.</p>
<div id="div" contenteditable="true"><a href="http://www.google.com/" style="display:block;">all be</a></div>

<script>
var sel = window.getSelection();
var div = document.getElementById("div");
sel.collapse(div, 0);

document.execCommand("InsertText", false, "This sentence should ");

sel.collapse(div, div.childNodes.length);

document.execCommand("InsertText", false, " on one line.");
</script>