Android: Header in Tree Grid does not scroll

On Android (3.x) the header in a tree grid does not follow the columns as you scroll horizontally.

Any suggestions?

(the same code works fine on all browsers and iPhone/iPad)

If you are using dhtmlxGrid - it is not purposed for Android devices.
As far as I know Android 3.x doesn’t allow to scroll content inside the page, so scrolling functionality of dhtmlx component just will not work.