Really cool and impressive! I couldn't do much since the bucket tool broke tho :(
It seems that the circle that draws stuff stops following the mouse when you select the bucket :/
Really fun regardless!
The bucket tool should still work. The cursor changes to a cross hair? I'll have a look later.
What browser, operating system and device are you using?
I tested on Chrome, Edge, Firefox and Safari (on a mac), and no issues with the bucket tool...