1459692 - Invisible text with @font-face

Status: UNCONFIRMED

(Core :: Graphics: Text, defect, P3)

Description

[kolorafa]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20180327223059

Steps to reproduce:

Go to any page (eg. https://developer.mozilla.org/en-US/docs/Web/CSS/font-family )
inject fonts from:
https://fonts.googleapis.com/css?family=Fira+Mono|Open+Sans:400,600
set font-family: "Fira Mono" 

https://youtu.be/5bxeehSAmN4

Problem first found at: https://www.vaultproject.io/intro/getting-started/install.html


Actual results:

Invisible text
https://youtu.be/1QbwOctEp9A

Affected:
firefox 59.0.2
firefox-developer-edition-60.0b15
firefox-developer-edition-61.0b2

OS: Arch
Looks like "Fira Mono" is installed and renders correctly without font-face, but breaks on site with it.