Mardak/tiles-dev — pull request #22 by Mardak (2014-04-08 21:35:56+00:00)
Title: Bug 991210 - [new tab page] Tiles are sometimes arranged all in a single line (wrapping as appropriate, e.g. to two lines with 5 items and then 4 items), instead of 3x3 grid

https://bugzilla.mozilla.org/show_bug.cgi?id=991210