Custom View Issues

Custom view is not working.

Used Ctrl+Alt+# to save a view in the cockpit
Using Alt+1 to recall opens a file browser to load GPX file.
Using Alt+# recalls the view but flickers heavily

This was not an issue but started started around three MSFS updates or last year.
Only add-on is FBW.

Has anyone has a solution for this issue?

Have a look at this linked thread and see if it may be of some help: