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NB: 070827 from the hudson build 2816 Steps to repro: 1) Create a class diagram and drop a class element to the diagram 2) Insert an operation to the class 3) From the project tree, found: a) the newly operation does not display b) There is nothing underneath the "Operations" node c) The expandable icon "+" or "-" is missing This is a regression.
It turns out, we have the same behavior in NB 5.5.1 by default. There is a new message action under the sequence diagram options to control. It is off by default in 5.5.1. I am not sure why the default is off, we should probably investigate. Anyway, the option appears to be missing in NB 6.0.
Ignore my previous comment. It was intended for another bug.
The fix for issue 113792 by lvv also resolves this issue. Please verify in the latest build.
Fix verified in build 070828 - b2841