Yes, I have 2 Views using pagination. One is Pagination enabled with automatic AJAX transition, the other Pagination enabled with manual transition and AJAX. I've got Full page refresh when visitors click on the search button checked under custom search settings (although there's no custom search on either of the pages where the Views are located).
I've just visited both pages on the frontend (several times) but no error logs are being generated. I've looked at my visitor logs but struggling to tell what's triggering the errors.
It's not that much to go on, not knowing what triggers it or when. As I say, examining the code where the error is reported, it very much looks like it would be provoked by something to do with ajax pagination.
There are some activity logging plugins that keep a record of everything that happens on your site (I don't have a particular recommendation, I'm aware of them rather than use them), and it may be with one of those that when you see the warnings in your error logs you can match it up with something in the activity log to know that a particular page is visited, for example.
