Every time I am doing a major change I clear the cache first.
Here is the video recorded from my tablet.
Follow the same procedure again as I mentioned before:

“I use chrome browser
Just take your tablet.Turn it horizontally and stick your finger on the screen.Then move it (while it is stuck) upwards.Keep your finger always stick on the screen and you will see the issue.Always look at the bottom of the screen.
Whenever you leave your finger the problem disappear”
I talked with another developer.He told me that he sees the same issue.

Regards