FolderContent and Collections failing

Objective; I wan to make a collection the target of a foldercontent button
The code; go "coll://FolderContent_Hard" foldercontent

The issue; Opus opens a new lister and navigates to the item chosen. (instead of running the file or exe).
The same code works fine for a regular path; go "D:\Appz\rippers" foldercontent (this will run the selected file as expected)

Am I missing something or is this a bug!