LayoutTests/fast/inline/incorrect-tab-position.html - WebKit - Git at Google

 <style>
 .outer {
   margin-right: 20px;
   white-space: pre-wrap;
 }
 </style>
 <span class=outer>	should<span>not overlap</span></span>
	<style>
	.outer {
	margin-right: 20px;
	white-space: pre-wrap;
	}
	</style>
	<span class=outer> should<span>not overlap</span></span>