Using Vuforia 8.1.11, Unity 2019.1.4f1, and MRTK v2.0.0.
I have a scene where vuforia is enabled in the beginning, then at the press of a button Vuforia is disabled, a screenshot from the camera, and use the screenshot as a texture on a quad. This was done by editing this script: https://docs.unity3d.com/ScriptReference/XR.WSA.WebCam.PhotoCaptureFrame.CopyRawImageDataIntoBuffer.html
At the press of a second button it goes to a function that just re-enables Vuforia.
This works when testing on my laptop just fine. But on the Hololens, everything works until re-enabling Vuforia. Vuforia will work in the beginning, but for some reason it won't come back on after the screenshot is taken.
I've tried both VuforiaRuntime.Instance.Deinit(); and VuforiaRuntime.Instance.InitVuforia(); , and VuforiaBehaviour.Instance.enabled = (true/ false);
Any idea what's going on?