Lighting Only Affects Tilemaps From One Direction

Lighting only affects tilemaps from one direction. 

Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.22 CL# 4435744

1. Open attached project
2. Open "NewMap" in the content browser

Results: 
The tilemap will only be lit in one direction

Expected:
The tilemap would be lit normally

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