Unexpected behaviour when using transparent color in MainWindow

Expected behaviour:

When using a transparent color in MainWindow.qml, we expected a seamless transition between views, with only one view visible at any given time. There should be no traces or shapes from the previous view, and the controls should render correctly without any visual artifacts or unexpected issues.

Actual behaviour

When switching between views, we notice that the rendering does not operate as expected. Each view appears to stack on top of one another with each transition, leading to remnants of previous views being visible.

Additional info

We do not have error messages.
We have observed that this behavior does not occur when using a solid color. Which makes sense because solid color prevents to see what it is behind the view. 

I include the files so you can reproduce the error. Additionally, please find attached screenshots with described behaviour. 
 
Run the application
EntryScreen is visible:

1.-Press screen to switch view -> ButtonScreen:

2.-Press arrow button to come back -> EntryScreen:

You can iterate over this steps and you will see that color gets more and more intense the more that you swicth between views.