When using KendoUI for Angular 2+, the filter value is still enabled and accepts input when "Is null" or "Is empty" is selected.
Since those selections do not require a parameter, I'd prefer the filter value to be default disabled.
Hi,
Feature is available in the latest version of the Grid package (7.x):
https://stackblitz.com/run/?file=src%2Fapp%2Fapp.component.ts
Regards,
Dimiter Topalov
Progress Telerik