This is about the "before" text at column#3 row#3.

The question is if a soft wrap opportunity is present between the out-of-flow box and its inflow siblings.

e.g
<style>
div { 
  border: solid;
  font-family: monospace;
  width: 130px;
}

img { 
  width: 10px; 
  height: 10px;
  background-color: blue; 
}
</style>
<div>first_line <img class=before>second_line</div>
<div>first_line <img style="position: absolute">second_line</div>

while the first <div> content breaks after the <img> (soft wrap opportunity is before and after the <img> inline level box), the second <div>'s content breaks _before_ the <img> at "first_line " with the whitespace trimmed.