Safari web page jumps
Whenever I visit particular websites (several, built in different ways), my browser position periodically jumps a bit. This also happens on both my MacBook Pro and my Mac Mini.
I can't get past the notion this is somehow related to something corrupted in my user account (I'm the administrator). When I test it via 'Guest Account', I see none of the frustrating browser behavior.
Help?
MacBook Pro (Retina, 15-inch, Mid 2014), macOS Sierra (10.12.3), Issue also appears on my Mac Mini