Brife,
The short answer is that MyEclipse is not WTP-based. However, for MyEclipse 5.0 we’ll be trasitioning some of our tools over to a WTP-base core and will pick up a few small things such as this. The work is ongoing and we’re planning a demo / first milestone at EclipseCon in March and will then continue to build and release on WTP 1.5 at the end of June.