URL: https://www.jpl.nasa.gov/video/details.php?id=1171#fragment-1

Browser / Version: Firefox 60.0
Operating System: Linux (Arch)
Tested Another Browser: Yes

Problem type: Site is not usable
Description: There should be a video but it's broken into pieces. Works in Chromium 63.0.3239.132. I disabled every blocking addon (uBlock, built-in tracking protection…) but it doesn't help.
Steps to Reproduce:

gfx.webrender.all: false
gfx.webrender.blob-images: 1
gfx.webrender.enabled: false
image.mem.shared: 2
layers.acceleration.force-enabled: false

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