LWRP Scene is visible in the editor and nearly complete dark in build. 2019.2.5f1

I was testing some stuff in a LWRP scene.
Everything seems to look and work as expected in the editor.
But when trying a finished build on my Android phone(s), I get a nearly complete dark scene.
The difference in light is immense, I've no idea why it's bright in the editor and so dark on my mobile. I've tested this on a Huawei P9 lite and a Samsung Galaxy S4.

Here's the project if you want to see it yourself: https://www.mediafire.com/file/esqogc1sc7iey0x/DarkSceneOnFinishedBuild.rar/file

Example images here https://imgur.com/a/Rb4mNNq , first screenshot is from the editor and second from my phone.

I'm hoping someone could tell me why my scene is so dark when testing on mobile.


EDIT: So I checked my project and the Unity intro should have this hexadecimal color as background: 231F20
But the intro on my phone has a competely black color.
My normal working projects have the hexadecimal color as background on startup.

EDIT2: I tried the dark on light splash screen and the whole splash screen is way darker then normal.

EDIT3: I downgraded to Unity 2018.4 LTS, my issues are now gone.