Use workplane space for ortographic cameras when workplane is active

Only when you need to switch back to perspective view, you have to use the 'Snap View' command.

Aaah! I was using the following key binds:
'1' - Perspective/Orthographic
'2' - Front
'3' - Bottom
'4' - Top
(...) etc.
I replaced the "Perspective/Ortho" with "Snap" and it works like a charm. Problem solved.
Thank you again for your help and patience!