Trying to amend a chip on NWBC 4 but get NWBC look and feel?

Hiya,

I'me just trying to customize a SAP standard report chip and, from 'documentation', I'd expect to see something like this (rendered in Corbu and it lets me edit):

But instead I see this (unable to edit without an access key and rendered in NWBC HTML or NWBC 3.5):

Would anyone know why?

Thanks!