How to hide tooltip in the columns of Gantt Chart

is it possible to Hide tooltip in the left columns of the Gantt chart and only make them visible for grid elements?

i tried the following and none has worked

gantt.ext.tooltips.detach("["+gantt.config.task_attribute+"]:not(.gantt_row)");
gantt.ext.tooltips.detach("["+gantt.config.task_attribute+"]:not(.gantt_row_task)");
gantt.ext.tooltips.detach("["+gantt.config.task_attribute+"]:not(.gantt_cell)");
gantt.ext.tooltips.detach("["+gantt.config.task_attribute+"]:not(.gantt_tree_content)");

Hello Chris,
Unfortunately, it is not clear for me where you what to show the tooltip.
Here are the elements that you listed:

The grid consists of those elements. To illustrate, here is the screenshot where I hid those elements for the first row:

If you don’t want to show the tooltip over the grid at all, you can detect if the mouse is over the grid and change the tooltip_text. Or you can return '' for the .gantt_row class.
Here are the examples:
https://snippet.dhtmlx.com/1a69baea5
Gantt 4.x-6.3.x:
https://snippet.dhtmlx.com/31cd6ecd0
Gantt 7.0+:
http://snippet.dhtmlx.com/5/ad36aabfa

If you need something different, please, clarify.

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