Hi Gourav,
Thank you for contacting us again.
Unfortunately still we can reproduce this situation without a code example because its a bit more complex.
However I would advise you to double check if you have set properly the filtering properties if the filter row is not visible.
For your workaround suggestion if the filter box doesn’t suit your needs I can recommend you to check the following demo regarding custom editor in the filtering row.
Please, do not hesitate to contact us if you have any additional questions.
Best regards,
Yavor Dashev
Smart UI Team