If you wait while using the FX Thread, the wait hangs on to the thread and everything stops.

What would be nice is an extension to Wait that puts the current thread status etc on
the "run later queue" marked as "non executable". The FX thread is then released to do other
things. When the Wait is "notified", the status is changed to "executable" and run later.

I know it is not that simple but it might make complex, asynchronous animation a bit
easier to program.

Regards
Don