Column filterFn function works incorrectly if multiple columns share field

[chuckn0rris]

Forum post

to reproduce in grid filtering example:

        { text : 'Fake Age', field : 'age', width : 100, type : 'number' },
        { text : 'Age', field : 'age', width : 100, type : 'number', filterType : 'string',
        filterable: {
                         filterField : {
                             type  : 'combo',
                             items : [
                                 'Paris',
                                 'Dubai',
                                 'Moscow',
                                 'London',
                                 'New York'
                             ]
                         },
                         filterFn: ({ record, value, operator, property }) => {
                             return value === "Paris";
                         }
                     }
        },

Try to select "Paris" in filter combo - no values visible.
Comment "Fake age" and try to select "Paris" again - all works as expected.