This wierd behavior just started after I got the new power cover (related?). Sometimes my tiles are stacked 4 high and sometimes 3 high (with the 3 high having larger tiles, of course). This happens suddenly when I turn on the device. It is not consistant. This morning, I turned it on (not restarted) and it was suddenly stacked 4 high. Just now, I rebooted and it is now 3 high. Has anyone else seen this behavior? I am using the Surface Pro 1. Everything else is working well. Thanks.