Tabbing without selecting a single-select has TypeError / null dereference

[timdiggins]

Prerequisites

• I am running the latest version
• I checked the documentation and found no answer
• I checked to make sure that this issue has not already been filed

💥 Demo Page

https://yaireo.github.io/tagify/#section-mode-select

Explanation

• What is the expected behavior?
  I can click (or tab) into a single select field, NOT select anything and (with the drop down still showing) tab to next field without error

• What is happening instead?

When I tab, an error is raised (and tab action does not occur)

• What error message are you getting?

jQuery.tagify.min.js:27 Uncaught (in promise) TypeError: Cannot read properties of null (reading 'value')
    at _.getMappedValue (jQuery.tagify.min.js:27:12074)
    at jQuery.tagify.min.js:27:7002
getMappedValue @ jQuery.tagify.min.js:27
(anonymous) @ jQuery.tagify.min.js:27
Promise.then (async)
onKeyDown @ jQuery.tagify.min.js:27

[yairEO]

Thanks for reporting I am on it.

[yairEO]

fixed in v4.22