Missing Conditions options on Custom Field when attempting to build new Segment in Campaigns

Missing Conditions options on Custom Field when attempting to build new Segment in Campaigns

We have mapped a custom field from CRM to Campaigns. Sync appears successful (image below), and the custom field (Contact Type) shows as an option when we try to Segment, but the Conditions aren't showing (image below) thus we can't actually use the custom field to filter the Segment.