I’ve had this issue for quite a while. There was already a topic on this issue but none of the suggested solutions solved my problem.
What happens is when I have shields turned on, on Youtube no images are loaded - thumbnails, channel images…
I have tried playing with shields advanced controls and none of it solved the issue. In the filter list none of the filters are turned on. Tried disabling hardware acceleration. Nothing solved it.
Edit: The link of the topic I’ve seen that’s related to this one