Steps to reproduce:
Open main menu, click on "About".

Actual results:
The layout/UI/screen displayed differs from the one in the other areas in that the button for the main menu disappears. Instead, the user has to click the button "Close" at the bottom of the screen in order to first close the "About" area and then be automatically redirected to where he/she has been before clicking on the "About" button.

--> Problem of inconsistency: user expects to always have the main menu bottom in upper left corner of the screen and first hast to "re-orient" himself in order to find the "Close" button on the lower side of the screen and "hope" that he will then get back to the usual UI as it is used in the rest of the program.

Expected results:
When the user opens/is in the "About" area of the program, the layout should stay the same:
The main menu button respectively the whole upper bar should stay in the upper left corner of the screen - no "extra page", which then has to be closed by an extra "Closed" button, should be opened!
This also makes it possible for the user to decide what he/she wants to do next instead of the program "deciding" to automatically" redirect the user to where he/she has been before (since the user might actually not// want to back to that are).