Firefox not respecting custom headers set

Support
1

I have the following headers set

/media/*
  Cache-Control: public, max-age=604800

/static/*
  Cache-Control: public, max-age=604800

When visiting my site in Chrome & Safari the appropriate headers are used in the response for the assets under these directories.

However, in Firefox (72, macOS), they are not respected and instead for some reason Netlify servers are returning cache-control public, max-age=0, must-revalidate for these assets.

The request headers being sent are

Host: sciencepresence.netlify.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:72.0) Gecko/20100101 Firefox/72.0
Accept: text/css,*/*;q=0.1
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Referer: https://sciencepresence.netlify.com/person/dominic-dagostino
Connection: keep-alive
If-None-Match: "84a2631a5a1a24f6b03bf9fb2b5b2f7a-ssl-df"
TE: Trailers
2

hi there, thanks for letting us know about this.

Could you provide us with the x-nf-request-id for this, please? then we can pinpoint.