I am unable to open videos on some websites, for example https://www.chelseafc.com/en/videos/v/2021/02/11/_to-be-in-this-competition--its-what-you-dream-about-as-a-boy----oU3eNBVT however, it will play if opened in bank mode or Chrome.
In addition i have noticed when visiting some websites where you have to use dropdown menus to select items, the dropdown box is blank, so have to access via Chrome.