Hi Andy,
After reviewing the information you provided, we attempted to replicate the issue by creating a sample. Unfortunately, we were unable to reproduce the issue on our end.
To better understand the issue and provide you with an accurate solution, we would request that you provide us with a runnable sample or modify the sample we have attached. Alternatively, sharing your full page code will allow us to replicate the problem at our end. This will allow us to better diagnose the problem and provide you with a more effective solution.
Regards,
Mallesh R.
Attachment:
SampleVideoReference_ce86429b.zip