1238668 - Tracking bug for issues caused by emulation of "display:-webkit-box" with "display:flex"

Status: NEW

(Core :: Layout, defect)

Description

[Daniel Holbert [:dholbert]]

I'm filing this bug to track site issues that are caused by "display:flex" & associated properties being imperfect emulation for "display: -webkit-box".

This includes:
 (a) Scenarios where sites went from not-working to mostly-working-but-something-isn't-quite-right (if the site depends on "-webkit-box" to render correctly at all).
 (b) Scenarios where sites went from working to not-working (if the site has standards-based fallback, e.g. using display:block, which we used to honor but now we'll skip in favor of imperfectly-emulated -webkit-box)

I'm hoping this tracking bug will help us prioritize which additional hacks (if any) we need to add to differentiate our emulated -webkit-box support from modern flexbox.