Task interval date too small, doesn't visualize

Gantt
#1

Hi if task interval date too small, doesn’t visualize 16-apr-2015 to 30-apr-2015 doens’t visualize,
but if interval it’s > 1 month it visualizes.
Is there an option to tell to show every task that will last less than 1 month?
thanks

#2

Please provide a demo,
I couldn’t reproduce the issue on our demos
docs.dhtmlx.com/gantt/snippet/cc89bd8e