[Screen customization plugin] Error on column display with custom fields

Discovered a display issue that is blocking for us with the Screen Customization plugin.

We've created new fields of type "reference" to display a list of values (on Risks).
In the Detail view of a Risk, display is OK, but in the list display the corresponding column is always 'null' or 0 instead of the expected value.

Is there something wrong with our configuration ? (see attached)