Steps to reproduce:

1. Log in to backoffice.
2. Go to Content / Tags.
3. Add two tags.
4. Try to move the tag to different location / possition.

Actual result:

See attached screenshot.

Moving tag to different location cause an error 'Cannot read properties of null (reading 'forEach')'.

Cannot read properties of null (reading 'forEach')

Expected result:

No exception occurs, tag is moved to proper possition.