"Generate Constructor" broken in 5.1 when Superclass has no Constructors

Hi!

I'm experiencing the follwing strange behaviour in IDEA 5.1 final: "Generate Constructor" doesn't work if Superclass has no Constrcutors defined, e.g.:

Generate" or "Alt+Ins" and select "Constructor" option
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After selecting the "Constructor" option, the popup window disappears and nothing happens. When defining a default Constrcutor for the Superclass, it will be offered correctly as implementation option.

I've already set up a JIRA Issue: http://www.jetbrains.net/jira/browse/IDEA-6735

Anyone else who experiences this behaviour in 5.1?