Dedicated servers keep memory of last loaded map, resulting in memory leak when transitioning between maps

As mentioned in closed bug [Link Removed], memory isn't being freed when the server changes maps.

1. Download attached project
2. Right-click on .uproject and generate visual studio files
3. Open .uproject
4. Package game as Windows 64
5. Close editor
6. Open .sln
7. In Visual Studio, build project as Development Server
8. After build, navigate to project folder -> Binaries -> Win64
9. Copy UE466668Server.exe
10. Paste UE466668Server.exe at location of packaged game->WindowsNoEditor->UE466668->Binaries->Win64
11. Create short-cut for UE466668Server.exe and at the end of the "Target" path of short-cut, add "-log"
12. Run short-cut for UE466668Server.exe
13. Open Task Manager and watch UE466668Server.exe memory usage

RESULT:

Notice memory for UE466668Server.exe consistently rises whenever the map changes (every 12 seconds).

EXPECTED:

Memory is freed when map is changed.