UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/604.4.7 (KHTML, like Gecko) Version/11.0.2 Safari/604.4.7

Example URL:
https://codepen.io/AmeliaBR/pen/ZeYBZb

Steps to reproduce the problem:
1. Open link

What is the expected behavior?
Result should look like in https://github.com/w3c/fxtf-drafts/issues/113#issuecomment-354352489

What went wrong?
Apparently feDisplacementMap wasn't applied.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? No 

Did this work before? Yes 63.0

Does this work in other browsers? Yes

Chrome version: 65.0.3306.0 (Official Build) canary (64-bit)  Channel: canary
OS Version: OS X 10.12.6
Flash Version: 

I actually do not have 63.0 installed so it might not be a regression after all and specific to the OS (mac vs. win) or my machine.