UI changes - on the fly?

I love the rapid feedback from Grails, but too much of a good thing...

I was changing some of the field presentation from a <input to <g:select and it was not showing up on the page.

So:
Refreshed the browser page - nope
Shut down the app, at the command prompt typed 'grails clean', restarted - negative

Finally I closed the browser and reopened it, and viola!