When using the Big Datasets Option:
gantt.config.smart_rendering = true;
In Chrome Version 47.0.2526.106 (64-bit) - you scroll the Gantt to the last task - it does not fully align the last row correctly with the Grid Area. This is easily correctly by scrolling up just a bit, but causes the tasks to not align with the Grid Area.
This is reproducible using the Big Datasets Example -> dhtmlx.com/docs/products/dhtmlxG … taset.html
It appears to also be happening with Firefox and Safari.