Using .51 and noticed the problem. Pointed firefox at demo page (https://www.polymer-project.org/components/core-overlay/demo.html -- try it to reproduce the bug) and overlay never opened -- my experience was that overlay would open but not close.
Using .51 and noticed the problem. Pointed firefox at demo page (https://www.polymer-project.org/components/core-overlay/demo.html -- try it to reproduce the bug) and overlay never opened -- my experience was that overlay would open but not close.