Cannot set columns while creating a field in Customize Form

Hi everyone! I’m back after quite some time.

I have added a custom field called P.O. Serial Number in Sales Order Item Doctype because we sometime have big orders and we deliver it in parts. So, it is necessary to mention the serial number of Customer’s P.O. in Sales Invoice and Delivery Note for their convenience.

I added the field in list view for easier input. But when I try to specify the number of columns of the grid to be occupied in the Display section, it resets to zero on updating the form.

This could be probably because there is no such field for specifying columns in the Custom Field Doctype.

Solved this by modifying the Custom Field DocType to include a field called columns. Shall I raise issue to add the same in frappe core?