Sometimes videos that use flash player doesn't load. For example this site has movies and trailers.
@Octavian20604 I've had the same problem in Facebook. I am never prompted to allow Flash to run when needed. The option Site Permission in Settings has a white list option.
1- Go to settings
2- Click on Site permissions
3- Click on Add (next to Allow) and add the page address.
It will work afterwards.
@Octavian20604 I've done more testing since my reply to you. It turns out that my answer is only a temporary fix. As soon as you reboot the computer, Settings forgets the sites you added. Sorry about that. I reported the bug to MS.