Text input is not removed after selecting an existing term

Problem/Motivation

Steps to reproduce

Add a few tags, set to use this modules' widget for Articles' tags field, type part of an existing term, click on the existing one to select it, and you will still have what you typed visible on top.

Is not a big problem but I don't think it's the intended behaviour. Selecting one option should clear the unselected option imho.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes