Name field of AB mailing too short

When creating a new A/B Mailing, the size of the name field is much shorter than it is for a new regular Mailing or a new Email.
This is not convenient for users as they have to move the cursor back and forth to see the whole name.

Comparing the style applied to the field of a A/B Mailing or regular mailing, it seems it's simply because the A/B mailing input lacks the type attribute.