Seems to be a refresh/update issue. We played with some map hopping today and I encountered this error/bug/behavior:
1. Open a map (FG Battle Maps for example)
2. Place a PC on the map
3. Do a planned movement (don't acknowledge or deny it)
4. Delete the token or move it via the CT to a new map
The planned movement arrow stays on the map, even if you click the checkmark or "x".
After you close and open the map, the arrow is gone.