Relationship record's name from Contact/Account doesn't appear in SurveyResponse ListView

[SinergiaCRM]

If you have a SurveyResponse record with a related Contact, it appears correctly in the DetailView of that record:

But it doesn't appear in the ListView of that module:

It only appears if you try to inline-edit it.

Note that the Contact column isn't showed by default in the ListView, it has been added using Studio. It happens the same with the Account relationship.

Issue

The ListView of the module SurveyResponse doesn't display the Contact related record correctly.

Expected Behavior

The record name should appear in any case.

Actual Behavior

It appears just as an empty field.

Possible Fix

There should be something wrong on the way the vardef is defined. Although we didn't find a proper fix.

Steps to Reproduce

1. Create a Survey
2. Create a Response for that Survey
3. Add a Contact to that Response
4. Add the column Contact to the ListView of the Survey Response module
5. Check that the Contact doesn't appear in the ListView of the Survey Response module

Context

Your Environment

SuiteCRM Version used: 7.11.15 (and SugarCRM 6.5)
Browser name and version: Chrome 83.0.4103 and Firefox 77.0.1 (64-bit)
Environment name and version: PHP 7.3, MySQL
Operating System and version: Debian 9