Thanks :)
All of those things make sense... I really did want to get the sliders working but just didn't get to it. And I noticed the repositioning of your hands thing too but didn't think much of it, so that's good feedback! I was thinking about controller input when I conceived the games, but built for keyboard and mouse in the end...
If you were able to play on the downloaded version then the web build should also resize fine when you use full-screen - and you can turn the tutorial off. I really wanted to get the tutorial messages connected to the screen element positioning, but I was way too far through it by the time I realized the issue there.