AFAICT the correct behavior for any bowsing tool on shift-click is to
show the decompiled code of the method. Debuuger winwdows don't seem to
do this. This can be very annoying in debugging ;-)

To reproduce: 
in a workspace do:
self halt.
Choose debugIt form the pre-debug window
shift-click on the line with Object>>halt.

You will see the method with it's comment which can't possibly be
reconstructed from the compiled code, can it?

Squeak on,
Torge