I wonder what the game version has to do with the functioning of a connected device. :-o
However, the button you see described in the controller picture in MSFS does not match the numbering of the buttons pressed in the sim.
For example, what the pictures (and the label on the stick itself) describes as button 8 is recognized as button 21 in the control settings manager (7 is 20).
Furthermore, two of the buttons (trim wheel up and down) only become active when the corresponding profile setting is selected (digital trim compared to analog trim).
So which buttons do you refer to when you say button 7?
If you refer to the two buttons in the lower right corner (x and y when having set the flight stick to left handed usage), I can assign these buttons to an action and that action is performed when pressed.
What the sim recognizes as button 7 (and 8) are the share and the options menu to the left and right of the jewel (the xbox button), but these also I can assign to actions which are then performed (in my case pause and external view).
Playing on XBox series X, standard edition from gamepass, most recent firmware of the flightstick is 1.1.1, input profile XBox, control profile set to “sensitive”, trimming set to analog, touchpad sensivity to zero, colouring green.
So far my grievance with that stick is the coolie hat, which does really not function in all directions, the diagonal settings are ignored (except front left), but that’s another issue.