am a75fa12d: Fix chips library bugs related to setting the threshold to 1. -...

am a75fa12d: Fix chips library bugs related to setting the threshold to 1. - Dropdown not being dismissed after having at least one chip and typing a character and deleting it. - Selecting a chip, deleting it by pressing backspace, and entering another character bring

* commit 'a75fa12d':
  Fix chips library bugs related to setting the threshold to 1. - Dropdown not being dismissed after having at least one chip and typing a character and deleting it. - Selecting a chip, deleting it by pressing backspace, and entering another character brings the deleted chip back.