preOpenStack and Breakpoints

[Mike Kerner]

Unrelated to the other preOpenStack problem reported in 4.5.1 earlier by
someone else....

I have a preOpenStack script with breakpoints in it.  But the breakpoints
never cause the script editor to come forward.  If I put an answer
"preOpenStack" line in the script the dialog will come up, but the
breakpoints still don't fire.

Is there some undocumented rhyme or reason for this?