<div style="float: left; width: 210px; height: 10px;"></div> <div style="float: left; width: 10px; height: 10px;"></div> <div style="position: relative; top: 0px; left: 0px; width: 100px; height: 40px;"> <div id=nested style="float: left; width: 90px; height: 10px;"></div> </div> In this case the "nested" float's containing block pushes the candidate rect to (0, 0) while the current (last) float is already at 220px
Created attachment 346396 [details] Patch
Committed r234508: <https://trac.webkit.org/changeset/234508>
<rdar://problem/42868709>