Facet Key Not working

Hi Team,

The Facet Key Visual on all of my desktop dashboards has stopped working.

Steps I've taken to resolve:

1. I've updated from the marketplace.

2. I've deleted and rebuilt the Facet Key Visual.

3. I've doubled-checked my data to make sure nothing has changed.

4. I've created a dummy dataset on a new Dashboard with only Facet Key used.

None of the above worked, Facet Key Visual simply isn't working as it used to.

Please advise,

Thanks,

Chas