Route planner exiting when selecting Lopoints offline

In route planner:

1: selecting start point

2: selecting end point and let LM calculate the route - then tap the map button

3: tap LoPoints offline

4: select category

5: tap the button to show the POIs on map

6: route planner is exited

When I reopen the route planner, the planned route will be recovered. But only the one with no or unsaved changes.

It would be good to stay in route planner after selecting POIs to show.