Hello hello!
This is an issue that my Instinct has been dragging along for as long as I can remember. I was hoping for it to get solved with the various updates but, alas, as the numbers go up, it's always still here. Here's the gist of it:
Whenever I'm navigating and the course/waypoints are right in front of me, the line/icons get cut short a few pixels ahead of the arrow, as you can see from this screenshot:
(the line should keep going, but it's simply cut short and anything past that is invisible)
If instead of facing my course I turn around to the side by a few degrees, the line appears once again,fully visible
Anybody else having this issue? No amount of zooming in or out seems to fix it, nor does switching the colour scheme or fiddling with the datafields. The issue is also present in every activity type.