Custom URL doesn't work on ID that isn't displayed

I configured a "Link for Column" with a primary key to use as custom id (@ID).

The problem is that the key is not there in the URL at all unless I also configure it to display. Well, I don't want to show the primary key to the users.

Any suggestions?

Thank you

I don't know, because I don't have a field with a URL, but it's an interesting and a valid question.
I temporarily modified the code so I can put "_internal_" in the heading and the field is skipped during display.
I am thinking that the more permanent changes would be to include all other "used" fields in the query and but mark them as non-displayable if they are not in the shown list of columns.
Thank you.

I have the same bug.

My workaround was to publish the column as the right most and adjust the widths of the columns to push it behind another layer.

austineggdonors.com/index.php?option=com_grid&gid=1&Itemid=67

The Donor ID is an assigned number, while the record id is hidden under the right column.

I tried that, but in my layout it was still geting squeezed in somehow. Also your layout is fixed width and mine is not.
A good work around though for some cases. Thanks.