Prefix CSS Flexbox does not work correctly

[marcusfrontender]

Hello,

Follow up discussion from @iandunn I spoke briefly on Slack with. I am building the [WordCamp website](2016.stockholm.wordcamp.org) for Stockholm, Sweden with the base redux theme. I built most parts in flexbox and ran autoprefixer locally with that to make it browser compatible. Normal flexbox prefix would look like this:

display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;

Now the wired thing is that it seems to remove some of the prefixes when I added this in the CSS Stylesheet Editor. I guess this is JetPacks CSS Editor that you add? Something is not correct. Can somebody look this up for me? Try fire up the website in Firefox or view the CSS source.

Thank you,

[iandunn]

xref ​https://wordpress.slack.com/archives/meta-wordcamp/p1466019831000015

[iandunn]

It turned out to be ​a bug in Jetpack. I submitted ​a pull request to fix it, and installed it on WordCamp.org in the meantime.