Publishing and/or editing a (published?) collection seems to cause the existing keywords to be added again upon saving, which causes a multiplication of the keywords.
How to reproduce:
Make a private collection with a number of keywords
Publish the collection -> this causes a duplication of the keywords
Publishing and/or editing a (published?) collection seems to cause the existing keywords to be added again upon saving, which causes a multiplication of the keywords.
How to reproduce:
See https://collections.clarin.eu/details/1083