Rich Text Editor dropdown missing few icons for FireFox users

Using the latest FF v42 something, see screenshot attached.

Happy Thanksgiving y’all!

Any progress on this? This affect on latest Chrome. Please check before releasing the 5.3 version.

Ok, you can mark this as resolved. It seems to be fixed on 5.3.0 Build 201603R25 (0) on both Firefox and Chrome. Thanks.