I have the same issue too. Only in Windows 10 (I have version 1709, 64-bit) and with Firefox 57. It works in my Windows 8.1 guest, which I also tried, and with Firefox 56 on the same Windows 10 guest that doesn't work with FF57.
I tried things like changing graphics acceleration between DirectX 10, 9, or disabled, but the problem is still there.
Tried activating and disabling HiDPI without any result.
Tried a clean install of Firefox, and tried to start with a new Firefox user profile, but nothing seems to work.
Also tried both the 64-bit and the 32-bit versions of Firefox 57.
Could it have to do with my exact hardware? I have a MacBook Pro 15 inch, late 2013, 2.6 Ghz, with GeForce GT 750M and Intel Iris Pro 5200 graphics.
Someone else with this problem that use something close to that?
Last edited: Nov 21, 2017