I have created a form that contains 5 people picker fields on it. In the start there were only 2 and they worked fine. A recent update required that I would need to add 3 more to the form. After adding those 3 (and making some other non-related changes to the form) the original 2 people pickers require me to click on the 'Check Names' icon whereas the 3 new ones don't, they automatically fill out the full name after the user has clicked another field or tabbed away.
All of these fields come from the same SharePoint list but are in no other way connected to each other.
Does anyone know what caused this inconsistency in my form and how I can solve it? Either by making none of them fill out automatically or all of them.