Hi @nikitaanisimov,
Thanks for the response. I have activated developer mode as you asked.
I tried loading a new Youtube video but get same results;
https://youtube.com/shorts/NFVvWRYy0R4
https://goodspiritsbar.com/gallery/#bwg1/77
Good to know, and that makes sense. Thanks!
Many thanks. It did turn out to be a plugin conflict.