Message10212

In 2.5, a jython class that was derived from an InternalFrameAdapter -- a convenience class -- could be added as an InternalFrameListener to internal frames.
In 2.7, the events (I only tested closing, and closed) are not caught.

The workaround now is to derive from an InternalFrameListener and implement all the abstract listener functions.

Adapter classes that I derive from that implement a single interface
works as expected. 
However, I not checked whether all "convenience" adapter classes that implement multiple interfaces suffer from this issue -- or is this a one-off problem.