Cannot filter by more than one column having the same values


I have a strange problem. As I wrote in the title the problem is as follows: I have 3 columns which can have basically the same values.I have a dropdownlist in each of these 3 columns with the same values. I have an event handler defined for filtering which looks like:

grid.attachEvent(“onFilterStart”, function (columnsIndexes, filterValues) {…});

Everytime I change the dropdownlist in each of these columns the event is triggered but only one of the filter values is passed to this event handler (the “filterValues” parameter contains only one element) no matter if the other dropdownlists are still used (containing other values for filtering).

Any help is really appreciated.

Unfortunately your issue cannot be reconstructed locally.
Please, provide any kind of sample or a demo link where the issue can be reconstructed.