Comment 4 for bug 1686087

Ok on doing further research I'm reliably informed that this patch

https://hg.mozilla.org/mozilla-central/rev/dfaafbaaa291

might be a fix to the problem.

It appears that this isn't included in the source base on a quick inspection. I'm traveling in the next week so I won't be able to test this very soon with a rebuild myself, but hopefully this gives some more help.

apologies that my original bug report wasn't useful enough.