Lightweight RP Sprite-Lit-Default isn't registering _NormalMap secondary texture

I'm using Unity 2019.2.0b7 on Linux (Ubuntu 18.04 LTS) through Unity Hub set up with Lightweight RP 6.7.1. I have a sprite and its corresponding normal map. In the Sprite Editor (2D Sprite 1.0.0) under Secondary Textures, I've set _NormalMap to my sprite's normal map and applied the changes. Next, I put the sprite into the scene, which automatically used Sprite-Lit-Default material. Finally, I created a Point Light 2D with Use Normal Map turned on and placed it around the sprite. Unfortunately, the sprite's normal map isn't working and isn't applied in the material settings. Any ideas on how to fix this? Am I misunderstanding something? Thanks in advance, I really appreciate it!

 

Thanks a bunch! I really appreciate it - it is working perfectly now.