When you create a round-trip on your Garmin Fenix 5X and want to save it. The Fenix 5X try to make a .fit file. You have to reset your Fenix 5X fast otherwise you get a large fit file that does not work.
Can you fix this bug?
I did the following actions on my Garmin 5X (to create a saved course):
.
Select Run
Hold MENU.
Select Navigation > Round-Trip Course.
Enter the total distance for the course. It does not matter how much
Select a direction heading. It does not matter what you choose
The device creates up to three courses.
Select to select a course.
Select save