Reproduction: 1. Visit http://demo.stackfull.com/virtual-scroll/#/biglist 2. Focus on the text 3. Hold "Page down" 4. It will page down several times but will stop after a bit Scrolling with a mouse makes page-down work again for a while, until it stops again.
Reproduction:
Scrolling with a mouse makes page-down work again for a while, until it stops again.