The following WPT test fails on WebKit but passes on Chrome and firefox: https://wpt.live/css/css-flexbox/flex-minimum-height-flex-items-010.html The issue here seems to be that WebKit doesn't recalculate the height of the inner box when the outer height changes and there are nested column flexboxes, one with a min-height property Check here also a simplified version of that test here: https://codepen.io/cl0p3z/pen/poJMdPj For a related issue fixed on Chrome check https://crbug.com/596743 and https://crrev.com/c/1283482
Although this was reported before I'm marking this as duplicate because we already have a patch in the other one. *** This bug has been marked as a duplicate of bug 215369 ***