dhtmlxCombo as a filter cell click event issues

When clicking on the top labels for sorting it shows a directional arrow and sorts the column based on the datatype.

My question is how do I disable this behavior fo the ‘dhtmlxCombo as a filter?’

When clicking just outside of the dhtmlxCombo box the same behavoir as the header titles happens.
I need to disable this behavior for the dhtmlxCombo filter row only, but keep it working in the header labels/titles cells/row.

Is this possible?

What I really need is a way to detect if the .hdrcell DIV also has the class ‘filter’ during the ‘onBeforeSorting’ event.

Or even detecting a row index would work for me. Once I can detect the header cell clicked is a combofilter also I can suppress normal sorting behavior.

Thanks in advance for any help.

We do own the pro version license btw.

Unfortunately such feature is not supported.