the attached example shows 2 grids one is rendered using a RowRenderer the other using a <template>

inside the row there a Combobox listening to onChange/onSelect events and triggering a re-render of the grid row (gridModel2.set(0, "dummyRenderer"))

Problem: RowRenderer
in the RowRenderer case the Combobox receives unexpected "onChange"/"onSelect" events even after the Combobox is already detached

No Problem: <template>
this does not happen in the <template> case (here only a single "onChange" event is triggered, and no "onSelect")

to verify the behavior just check the server logs

in ZK 7 there is no duplicate onChange event but still an unexpected onSelect event on the detached combobox