Are you familiar with global layers? The issue is that you have several quit buttons on screen and some are invisible or hidden below. The cause is because you are using global layers incorrectly.
When you use a global layer you can leave the UI in one layout and it follows through to the other layouts, if you create the objects in every layout then it will duplicate them. The idea of it being global is so you can easily make the HUD once in the first layout and it follows through. You do not need to make a volume / quit button in each layout. If you run in debug mode you can see the several instances of buttons that exist.
Also the reason they are hidden is because you have different hierarchy and number of layers per layout. If you are using global layers you should be using the same number of layers so that the global one has the same ID/number and name. i.e. Mobile UI layer could be 5 in each layout and should alter its position
So 2 things to fix :
- remove any objects that appear in a global HUD layer from all the layouts except the first one they appear
- make sure you use the same number of layers in each layout and they are named the same and in the same order