It’s a UI issue.
I usually have the map icons filtered pretty much every time I play.
It would be nice if when the seasonal objectives are being added to the map that the map keeps my existing filters rather than show every icon and then add the seasonals.
A minor thing tbh that would be nice to have, not a necessity
Edit:
Same applies when doing a championship and the race locations are shown on the map. The map is fully populated with icons. Be nice to not be as cluttered