We do, it&#x27;s the IE9 situation!<p>I was looking at our browser metrics the other day and it&#x27;s yet to drop below the arbitrary 5% usage figure we use to fully deprecate browser support. We are a public facing site, and not particularly niche.<p>It&#x27;s hovering around there, but if a user is still clinging to ie9 it&#x27;s highly likely they don&#x27;t have the ability or requirement to upgrade.<p>When ie9 legacy support drops my biggest headache will be ie10&#x27;s squiffy flexbox support.