Yep! As mainly an Objective-C programmer (and not much of a web developer) I was very excited about flexbox when I had to work on a native OS X app that edits grids of photos in the app but also exports to web.<p>Legacy browsers were not a requirement (yay!) so I was all over flexbox, and indeed it took about 5 minutes to get it working perfectly in Firefox and Chrome. Sadly, after another 20+ hours of trying to get it working in Safari we had to declare it a failed effort, and give up on flexbox.<p>It <i>almost</i> worked but Safari had layout bugs that would render things in the wrong place, or inappropriately partially outside the visible bounds of the window.<p>(This was -- <i>checks git</i> -- April 2015. I still click every link about flexbox on HN waiting to see somebody say it Safari support for it has improved.)