Your stty settings look fine.

perldebug has this:

"ornaments" Affects screen appearance of the command line (see Term::ReadLine). There is currently no way to disable these, which can render some output illegible on some displays, or with some pagers. This is considered a bug.
So maybe you encountered this bug. The doc says something about readline, so maybe try 
$ PERLDB_OPTS=Readline=0 perl -d myprogram.pl

[download]

In reply to Re: My Key Strokes are not echoed when typing in debug mode. by Anonymous Monk
in thread My Key Strokes are not echoed when typing in debug mode. by malbie

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