Positive aspect (6)
I believe the answer is:
upside
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">positive aspect</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for upside that I've seen before include "advantage" , "Top surface of something" , "Positive aspect of a situation" , "Favourable aspect" .)