Can some script interfere with the webvisor?

Question

Yandex.Metrica

I can't figure it out.. the webvisor will display only the first screen of the landing.. everything below is not displayed.. Can some script interfere with this?
I logged in from all devices, made test applications - everything is the same .. I asked other people to go to the web browser - everything is the same.
I tried to take the counter code (by changing the number) from old work, everything works there and the webvisor works fine.
I suspect that this script is somehow interfering. Installed slick and photo enlargement script

Answer 1

maybe, of course,
the Webvisor is not a camera in front of the monitor, but a JS script that monitors the mouse