Here is the procedure:
1. Select any POI/Waypoint and « Track to Here »
The app will now draw a line from current location to the selected POI/Waypoint
2. After several seconds, « Record Track »
The app will start to record Track by drawing a line from previous position to current position.
At this point, the « Track To Here » line disappears.
If I were to reverse the process, or perform step #1 again, that line is redisplayed again.
I believe this is a bug. That « Track to Here » line should not disappear. It should be visible until explicitly removed by the user.