List affected puppet class names when importing environments

Hello,

When import classes/environments from puppet, it seems like the Operation
column is supposed to list the affected classes, instead all I see is the
operation followed by a colon. Am I missing something to get Foreman to
display what classes are being modified in a given environment/module or is
this not a feature of foreman at all?

We're currently on Foreman 1.15 + Puppet 4, but the same is true for
Foreman 1.6.1 + Puppet 3 (our old server).

Thanks,
Georgi