There’s a weird procedure that was suggested to me (by MSFS Support on Twitter) for another reason (I could not fly daytime ever since one of my friends had not left the group properly prior to exiting the sim).
And I did not want to suggest it because it entirely wiped my logged hours, my mappings, everything.
It did solve my issue, though.
So here it is :
Cache clear 1: Cold restart
- Turn off your console
- Unplug the power cord from the back of the console
- Wait for two to three minutes
- After two to three minutes, plug the power cord back and restart your system
Cache clear 2: Clear persistent storage
- Press the Xbox button on your controller
- Go to your Profile
- Select “Settings”
- Select “Devices and Connections”
- Click “Blu-Ray” in your menu
- Select the “Persistent Storage”
- Click “Clear Persistent Storage"