I initially opened a Support Request, but it was suggested that this is better entered as a feature request through the Pega Support Community:
We recently had an issue reported by our users, where the person joining a cobrowse session on an iPad could not see page scrolling from the person who initiated the cobrowse session. This was true whether the joiner was using Chrome or Safari. I do not recall this being an issue in the past. Additionally, our application is supported on desktop and mobile. It would be great for Pega Cobrowse to properly support a mobile experience.
***Edited by Moderator Marissa to update SR Details***