Api Compatibility Level

I have recently discovered that when I am running the .NET 4.0 api compatibility level on Unity the app functions normally on the hololens, but when I switch the level to the .NET Standard 2.0 the Vuforia api detects the image but does not set objects positions to that point.

Does anybody know the reasoning for this?

Thanks.

[UPDATE]

I have found that when using the .NET Standard 2.0 api the objects aren't centered with the picture, but centered with the camera whereas it is the opposite with the .NET 4.0 api, the objects center themselves with the picture and not the camera.

I have run through all the alignment methods and they all return the same result.