Check output of this on ar.wikipedia.org and en.wikipedia.org
[[File:Hawk moth caterpillar.jpg|thumb|250px|Right|Hippotion celerio]]
On en.wikipedia.org, the legacy parser HTML looks like :<div class="thumb tright" ..> ... </div>
On ar.wikipedia.org, the legacy parser HTML looks like :<div class="thumb tleft" ..> ... </div>
But, Parsoid generates <figure class="mw-halign-right" ..>...</figure> in both cases.
Should Parsoid flip the left/right orientation in the HTML or should the CSS for the classes be transformed via CSSJanus? Right now, neither of this happens and causes pretty significant rendering diffs (which shows up in visual diff testing).