Do not use tooltip in the left table area. How to implement it

Gantt
#1

Do not use tooltip in the left table area. How to implement it？

#2

Hello,
If you don’t want to see the tooltip when the mouse is over the grid, you can return the empty tooltip for the grid using gantt.ext.tooltips.tooltipFor() method:
Tooltips for Gantt Elements Gantt Docs ;
Please check the example of how it might be implmented:
https://snippet.dhtmlx.com/5mframct ;