Thanks for the feedback. Are you using mobile Safari? Can you try changing the pressure sensitivity slider to 0 percent? It might be an issue with wrong pressure detection. I've had to write some custom code for the native iOS version to fix it but hadn't really tested in the browser.
Sure. I dialed the pressure sensitivity down to zero, but it still didn’t work. This was in mobile Safari (WebKit) on an iPad. It definitely works in Firefox on Android, though, so it does seem to be an iOS-specific issue.
Thanks for trying it out. I'll investigate.