Have you tried rebuilding the lighting? When adding/altering objects the light needs to be updated (you’ll see a red warning label in the top left of the game screen stating so) just click the build button right next to play and see if that works 
Have you tried rebuilding the lighting? When adding/altering objects the light needs to be updated (you’ll see a red warning label in the top left of the game screen stating so) just click the build button right next to play and see if that works