Example problem page: https://www.aljazeera.com/programmes/insidestory/2018/04/palestinian-journalists-targeted-israeli-snipers-180428181902831.html When I press the play… (read more)
When I press the play button in Firefox Quantum 59.0.2 (64-bit) playback is not instigated. Nothing happens. This has been occurring since I updated to Quantum. I cannot see that there are any add-ons / plugins I require to make the iFrame play.
Image 1 below shows the black iFrame screen that accompanies the malfunction in Firefox.
Image 2 below shows the IFrame screen as it appears in Google Chrome (in which the video playback is functioning normally).