Use case

Inside the implementation of DropdownButton is an Inkwell. This Inkwell has a hitbox that does not cover the entire area of the button. A user can click on the button but the click is not handled.

Proposal

Example - when implementing a custom dropdown that looks like this:

The clickable hitbox looks like this:

The desired hitbox should look like this:

To accomplish this, add Padding to the Inkwell.