<!DOCTYPE html><!-- webkit-test-runner [ LayoutFormattingContextIntegrationEnabled=false ] -->
<style>
div {
  padding-top: 1.5px;
}
</style>

PASS if no content jump
<div>when<span style="font-size: 10px;">this</span></div>
<div>and<span style="line-height: 10px;">this</span></div>
<div>and<span style="vertical-align: top">this</span></div>
text is selected