Description of problem:

Certain sites render as a blank white page. The page is completely interactive though. I can click on hyperlinks if I move the cursor over the anchor text's location on the screen.

I've confirmed this happens with:

* https://gitlab.gnome.org
* http://fedorapeople.org/~linkdupont
* https://fedoramagazine.org/wp-admin/

It does *not* happen with:

* https://bugzilla.redhat.com

Version-Release number of selected component (if applicable):

* epiphany-3.30.2-1.fc29.x86_64
* webkit2gtk3-2.22.3-1.fc29.x86_64

How reproducible: Always


Steps to Reproduce:
1. Launch epiphany
2. Navigate to https://gitlab.gnome.org

Actual results:

The site acts like it's loading, but after the progress bar advances, a white/blank page is rendered.

Expected results:

The site to load and page contents be visible.