Extending an existing method in other package does nothing in Calypso browser

[riuttner]

Checking extension box in calypso allows to select package, but when extension is confirmed, nothing happens (P13, W10).
Expected behavior is however:

• The checkbox stays checked when returning from package selection
• The name of the extending package is shown left of the checkbox

The expected behavior is broken not longer than since 3 weeks.

How to reproduce it:

• Browse class Boolean
• Select method #asBit (which is just implemented as subclassResponsibility in Kernel package)
• Click checkbox extension, choose an arbitrary package (e.g. Deprecated13)
• Close package selection dialog with Ok

Nothing happens. Existing extension methods of the same class, however, are displayed correctly.

IMHO this is very urgent: Currently, you cannot extend a class in a package where the class has not yet been extended in. Even my personal "emergency fallback" for cases like that, using file-in, currently does not work without another patch (see #17480)

[jecisc]

I got the same problem today. This was working recently so the break is pretty recent