Interesting bug: if you swipe on screen with the mouse button pressed and slide of screen to release the mouse button the on screen swipe action stays attached to the mouse cursor. Only sort of a bug because it's only because it runs in a web page vs on an actual phone. Still would be interested in how to fix that in general.
Overall it looks cool, I'm a native mobile app guy so I'm always skeptical about mobile web. This doesn't change that for me but I can see growth in the web platform for mobile.
It’s a common ui bug in all software, happens due to release event firing outside of controlling element. People don’t know about pointer grab, which should be used in drag operations, and frameworks don’t even inform nor encourage it. Modern ui/ux school.
Overall it looks cool, I'm a native mobile app guy so I'm always skeptical about mobile web. This doesn't change that for me but I can see growth in the web platform for mobile.