Calendar and Combo popup at the bottom of a page problem

Hello, we have a problem:
when calendar or combo item is located at the bottom of the page - its popup is truncated when clicked.
Here are pictures illustrating this behavior:

Select item works as expected - when there is no place for popup under select item - it popups above.

Hello
Could you provide us completed demo to reproduce the issue?
docs.dhtmlx.com/doku.php?id=othe … leted_demo

Thank you for attention,
Here is completed demo to reproduce the problem. You can see “Start Date” calendar and “Address Region” combo popups being truncated.
demo.zip (623 KB)

So, send a fix for you

In current 3.6 version this issue was resolved.
dhx_upd.rar (209 KB)