WOFF files compressed on origin, but not after Cloudflare



After using Cloudflare my WOFF (font) files are not compressed, and reported as no gziped. There is a support open issue several days ago #1457501.

My origin test:

After Cloudflare:

You can see at compress transfer section that WOFF files are not compressed:

498.0 KB total in compressible text, target size = 394.9 KB - potential savings = 103.1 KB

WARNING - (175.9 KB, compressed = 96.5 KB - savings of 79.4 KB) - https://www.decisao.net/fonts/font-icons.woff 
FAILED - (37.2 KB, compressed = 13.6 KB - savings of 23.7 KB) - https://www.decisao.net/fonts/lined-icons.woff

I tested the files via curl, the results are the same:

curl -H "Accept-Encoding: gzip" -I https://www.decisao.net/fonts/font-icons.woff

HTTP/1.1 200 OK
Content-Type: application/octet-stream
Content-Length: 98807
Connection: keep-alive
Date: Mon, 25 Dec 2017 00:52:51 GMT
Last-Modified: Sun, 24 Dec 2017 19:10:45 GMT
ETag: “a4a3d54e6434158657e8bf728f13c001”
x-amz-storage-class: REDUCED_REDUNDANCY
Cache-Control: max-age=691200
Content-Encoding: gzip <========================= SEE GZIP COMPRESSION
Accept-Ranges: bytes
Server: AmazonS3
X-Cache: Miss from cloudfront
Via: 1.1 bec99d31f97b04eb17b6d14ed9b452b9.cloudfront.net (CloudFront)
X-Amz-Cf-Id: YjMQSm0eS-lJagrv9NhqqtVFxmCgl1KfuaYyJ4HAB-XsAdejXcQHHg==

WITH CLOUDFLARE (orange cloud):
HTTP/1.1 200 OK
Date: Mon, 25 Dec 2017 00:45:38 GMT
Content-Type: application/octet-stream
Connection: keep-alive
Set-Cookie: __cfduid=dbc464429753b2bae3dbe66cc472f88711514162738; expires=Tue, 25-Dec-18 00:45:38 GMT; path=/; domain=.decisao.net; HttpOnly; Secure
Last-Modified: Sun, 24 Dec 2017 19:10:45 GMT
ETag: W/“a4a3d54e6434158657e8bf728f13c001”
x-amz-storage-class: REDUCED_REDUNDANCY
Cache-Control: public, max-age=691200
X-Cache: Miss from cloudfront
Via: 1.1 1dcbecb3db3e9de133da41ed053506f0.cloudfront.net (CloudFront)
X-Amz-Cf-Id: 9WnnbkTTS0dj69PrS3-IzNDAJ0IZQTfnPKr7Al-juj3lnoUTcz6GiQ==
CF-Cache-Status: HIT
Vary: Accept-Encoding
Expires: Tue, 02 Jan 2018 00:45:38 GMT
Server: cloudflare
CF-RAY: 3d27c75d7fd50a06-ATL

There is no GZIP at all with cloudflare. My origin (Cloudfront) is serving the files gzipped.

Please take a look on this issue.