UWP Build: UI Text appears in one scene but not in the other

Everything appeared fine on the Unity game mode but when I tried to build and run it as UWP, the text on my Main scene appeared but not the one in my Game scene.
I tried building as a Windows standalone (.exe) and it turned out perfectly fine.

Does anyone know what the issue may be?

P.S. I'm using Text Mesh Pro UGUI for text but I don't think that's the issue