Very minor bug: on my iPhone if I have set a slider all the way down to zero I can no longer slide it back up again because the iPhone wants to activate the mobile Safari “back” gesture instead.
Trawling the internet for similar issues reveals that this is probably a Mobile Safari limitation/bug around the native range slider input. I think what we can/should do is:
File a Apple Radar bug into the void
Possibly @jashkenas’s invaluable Inputs notebook can include a mobile-friendly range slider?