Same problem here.
Somebody else has been struggling with this:
I’m not sure if the solution applies to everyone. Can’t see how it would in my case at least. Maybe I’m wrong though.
[testing on a bq Aquaris X2; Google Chrome]
It looks like the disgusting elastic way in which this happens is caused by Chrome - unlike the actual problem itself.
My guess is that it has something to do with the body element, because this issue takes place even when disabling the bottom sections.
Annoying indeed.