"Done" bar is really slim and not very high - any ideas how to make it a bit taller?

I've deployed this plugin to my app, it's working great! However, I just feel the "Done" button bar along the bottom is very squished up and a little difficult to press on a phone.

Any ideas how to make this bar a little more on the height?

See attached picture below:

No source file or test is named. Start by locating the mobile UI code that renders the “Done” bar, then compare it with the attached screenshot and verify the bar is taller and easier to press on a phone.

Written by the indexing model from the issue text.