The new pocket edition UI isn't great

The new UI looks good! If it was only a visual change then I'd be all for it! Plus, the ability to customize it is an amazing feature! But it's not just a visual change. The spacing between the buttons feel different, the size changed for some reason (I know you can edit that but it still feels off) and worst of all, going up in water now uses the same controls as flying. Now, the water thing might not seem like a bad change at first, but when you consider the fact that the player will bob in and out of the water when they reach the top it reveals how bad it really feels. You can no longer just hold down the button to swim, you have to let go and re press it each time you bop to the top. This feels abhorrent. I appreciate pocket edition getting attention, and allow me to repeat that the customization and visual appearance is great, but I think this should be fixed.