Tell the developer!
In the attachment of the document, there are simple data and triggers in two variables.
If you choose, for example, "A". Then to return the samples to the old state, you need to press the "back" button three times.
Because the variables change back, and there are two.
I think this is a bug, since only the samples in the data model should change, and the variables must change themselves by trigger. And all this at the touch of a button.
Those. How many times the sample has been changed, so many times you need to press the "Back" button to return to the initial state.