10.3 introduces some validation [#3437325] so it may no longer be an empty string it is now NULL if it is not set.
10.3 also removes it from the site configuration form so it is more likely to be NULL on new sites [#3439439]
This should only affect new sites installing this module created after 10.3.
Steps to reproduce
Run tests on a fresh install of 10.3
Proposed resolution
Remove dependency on setting like the 2.x branch does.
Problem/Motivation
10.3 introduces some validation [#3437325] so it may no longer be an empty string it is now NULL if it is not set. 10.3 also removes it from the site configuration form so it is more likely to be NULL on new sites [#3439439]
This should only affect new sites installing this module created after 10.3.
Steps to reproduce
Run tests on a fresh install of 10.3
Proposed resolution
Remove dependency on setting like the 2.x branch does.
Remaining tasks
User interface changes
API changes
Data model changes