Auto reload is constantly running making the Jetty process use 100% CPU time

For some unknown reason just after Jetty has loaded the Grails enviroment and printed out the message:

"Server running. Browse to http://localhost:8080/MyGrailsApp"

it immediately recompiles all classes in the project to the \classes folder, reloads all plugins and
regenerates the dynamic scaffolding and ending by printing the message shown above.

This goes on in a loop causing the Jetty Java process to use all 100% of my poor CPU

The only workaround I found is to use the grails -Ddisable.auto.recompile=true run-app
but this is naturally not a desirable solution to the problem