Vertical Scrolling is cutting out data

Hi,

i ran in a strange issue. My data is cut out, when I watch it on an iPad. For example.

On the normal browser I see 18 rows of 29 and can scroll.
On the iPad i can see only 12 rows and can scroll until row 18
On the iPad Pro i got the same data as on the normal browser

So the data seems to be there but can not be displayed

I got that problem on the real devices as on the chrome simulator

datatable = {
view: "treetable",
id: "datatable",
autoheight: false,
scrollX: true, //<- IT-2474
scrollY: true,
fixedRowHeight: true,
// rowHeight: 22,    
footer: true,
on: {....