Editing post, clicking on Tag or Author x does not remove item

[keybits]

Issue Summary

When clicking on a tag or author to remove (clicking the x) the tag or author is not removed.

I get this error in the console:

vendor.min-4db975524bfa30c0dd967a59778fbd91.js:9092 Uncaught (in promise) TypeError: Cannot read property 'appendChild' of null
    at c.animateOut (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:9092)
    at Object.destroyModifier (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:8792)
    at un.destroy (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:1324)
    at k.[DID_DROP] (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:3752)
    at vendor.min-4db975524bfa30c0dd967a59778fbd91.js:3750
    at Set.forEach (<anonymous>)
    at v (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:3750)
    at E.[DID_DROP] (vendor.min-4db975524bfa30c0dd967a59778fbd91.js:3752)
    at vendor.min-4db975524bfa30c0dd967a59778fbd91.js:3750
    at Set.forEach (<anonymous>)

This is a new clean installation of Ghost today.

To Reproduce

1. Edit post settings
2. Click on x to remove a tag or author

Technical details:

• Ghost Version: 3.12.0 (new clean install)
• Node Version: 12.16.1
• Browser/OS: Latest Chrome and latest Firefox
• Database: MySQL 5.7

[ErisDS]

I got the same error when trying to unpublish a post.

Also had reports of the same error when trying to publish.

[keybits]

Thanks for the quick fix 😄