Mapping fields in the Hubspot plugin does not always save. Hitting Apply goes back to the Enabled/Auth page. Opening the Contact Mapping page shows previously mapped fields blank.
Sometimes clicking Save & Close does save the field map but not always. I can’t determine under which circumstances fields will retain mapped.
Also,
I just opened the mapping and changed nothing, hit save and close and was returned to the Enabled screen with an error message “This form should not contain extra fields.”
It was in the release announcements linked above for the beta and stable - I have also added it to the status thread here: Mautic 3 Status Thread as we had negated to add it there.