Yes, unfortunately there are problems with the chrome web store. I have struggled with it myself and also made a thread about it
not long ago, which remained without reply.
The one game I got running properly on the store isn't using fullscreen and I used the version you can download from clay.io through their distribute options, when you upload your game there. So that might be worth a try.
I am always hoping for some fixes regarding the chrome web store exporter or at least some viable workarounds. PixelRebirth2013-10-17 18:20:49