Last task cutoff

When the horizontal scroll bar is enabled, the last task of my gantt is cut in half and the bottom half can’t be seen making it hard to drag the task.

Hello Jon,
It happens because there is no horizontal scrollbar in the grid. You need to modify the layout and add the group parameter for the scrollbars:
https://docs.dhtmlx.com/gantt/desktop__layout_config.html#visibilitygroups
Here is the snippet that demonstrates how it works:
http://snippet.dhtmlx.com/2c0cbd6d2

It works! Thank you.