[Bug 1643200] Re: After updating to firefox 50.0, tab goes black instead of showing web pages

[Thomas Mayer]

I tried to disable and enable hardware acceleration in preferences and
restart firefox, but that did not improve anything.

I figured out that I had

layers.acceleration.force-enabled=true

in about:config tab.

For instance, I've set

layers.acceleration.force-enabled=false


After that, instead of getting black tabs I now get white tabs. The funny thing is, that I can click on invisible elements of the web page, so it is loaded but just not visible.

When I click on invisible elements of the web page it even "opens" the
corresponding URL. Just that it is not visible again.

I guess this issue has to do something with graphics acceleration. Or
maybe e10s if something changed there.

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Title:
  After updating to firefox 50.0, tab goes black instead of showing web
  pages

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