Game Creation Bug(Main/Begginer Lobby)

Bug Report
Expected behavior
When i click map and select the map i want to play i can choose between main or beginner

Actual behavior
When i click map and select map it shows main/beginner but if i decide i dont want that map and click off and select another map the main/beginner option of where i want lobby created disappears and i have to back out from map menu and go back into it

Steps to reproduce the behavior
Click map near the header, click any map that you want created, hit start new game, instead of hitting continue click anywhere to remove menu and select another map and hit start game. The header for main/beginner disappears and it will make you create in main lobby.

Information:
Browser: Google Chrome

Browser version: Version 78.0.3904.108 (Official Build) (64-bit)

OS: Windows 10

Any other relevant information:

Attachments:
http://prntscr.com/q161w6 (light shot screen shot #1)
http://prntscr.com/q1633c (light shot screen shot #2)