I can record a video probably tomorrow but the steps are simple.
Spin up the droplet.
Create Format collection, with one field called name.
Create Ticket collection, with one field called name and one relation field. Relation is Ticket has one Format.
Create a new Format record.
Create a new Ticket record with a name and add the Format from the relation drop-down.
Once you click on save, the error occurs and never saves the ticket.