Overlay mode issues
1. Night mode not respected.
2. Previous position not remembered
3. It seems unnecessarily large, can it be scaled down a bit, it's an overlay not trying to take over the app underneath it.
4. Again, as it is an overlay, perhaps a degree of opacity/transparency would be helpful too.
I haven't yet come across any warning or the bottom bar where it tells you things so I can't comment on those yet.
Devs: look at the original overlay for how it looked before. The only issue that one had was the overlay not moving back into position if you manually removed the bottom bar instead of waiting for it to go on its own.