Sales Pack - Displayed name for Contact type Link Multiple

[qpoint]

After an upgrade of espo to version 7.5.6, the display name for Contacts changed from firstName + lastName to just lastName in entities with a custom Link Multiple for billing contacts.
Both the Quote and SalesOrder entities had this added so that multiple contacts could be entered.
Administrative settings for Person Name Format is set to "First Last" and did not change.

The Case.Contacts field provides multiple contacts out-of-the box, and names here still show ok, and further, have a means to designate the Primary contact somehow.
It seems to be just the entities that we customized.

The fields we added:
Quote.billingContacts. Relationship: Many-to-Many, Link billingContacts.
SalesOrders.billingContacts. Relationship: Many-to-Many, Link billingContacts.

Is there a way to correct this?
Thanks.

Espo version: 7.5.6
Sales Pack Version: 2.1.5

[yuri]

It's likely not controlled by Sales Pack. It's the Espo internal logic. 7.5 is quite an old version. I'd recommend consider upgrading.

[qpoint]

Understood, we'll just live with it for now.

We run a dockerized environment and upgrades with espo require careful planning given php version and extension compatibility. Given that, we tend to do upgrades once a year, around holiday periods. We have a lot of workflows (automated customer invoicing and renewal quotes which is very nice) that are active and we've had things break after an upgrade.

Thanks.