Re: Assigning pins for custom buttons, What Have I missed?

Hello Again,

The week after my last posting the printer started miss-behaving.
I have spent a few hours exploring MARLIN [2.1.2.4] each night, trying to resolve the unexpected behavior.
I have also hunted through the start & end code from My slicer and disabled the start and end code of the TFT

When a print Ends the extruder fully unloads.
The filament sensor was connected to the SKR_3
I have disconnected all filament sensor wiring.
I have rebuilt Marlin as follows;

//#define FWRETRACT a bit overkill
//# define CUSTOM_USER_BUTTONS
//# define NOZZLE_PARK_FEATURE
//# define ADVANCED_PAUSE_FEATURE

These are the TFT firmware dependencies; [they were/are commented in this way]

emulated_m600:0
pause_retract:R0.0 P0.0
fil_runout:0

Are there any other firmware settings/dependencies that may be causing this?
How can I further diagnose & correct this problem?

Thank you all in advance - Shane