Another person to add to the pile. Got a clean Win11Pro install on a micro PC off eBay in the hope of getting a less confusing than swapping between screens on a laptop option for a bedriden elderly relative and surprised to find this issue when installing SkyGo app, have updated to the latest graphics driver etc. This is a totally clean install on a PC with no other software yet.
I assume that since it's not sorted they are not sure of the root cause but it seems a little like a DRM issue maybe? since the adverts etc play. iPlayer works on the BBC etc.