1) Game does not handles keyboard properly. Use preventDefault in the handling code.
2) Packets stops if #of targets for randomization 4 or 5. They return if # dropped below 4 or randomization disabled.
Thanks for the bug reports! I’ve fixed #2 and will put out an updated version once the voting period ends.
For #1, what specific issues did you run into with keyboard input, and on what browser? (If it’s specifically about using Tab to navigate through the menus, I can improve it a bit, but the UI library that I’m using has a number of bugs with keyboard navigation that I can’t easily fix.)