Image Plate Not Visible in High Res Shot

So there seems to be a Bug with the combination of the Image Plate and the High Res Shot, logged here: UE-51764
Anybody got an idea for a workaround?
Inside of the Editor i can get this only working, when i change at runtime settings of the Imageplate, like activating the “Render CustomDepth Pass”…
But this isn’t working programmatically (I activate the setting in my Level Blueprint), the imagplate is still missing.

Edit: Just selecting the ImagePlate (and so the Camera) inside the World Outliner is enough to have the ImagePlate inside the Screenshot, strange behaviour… By unselecting is the ImagePlate again gone… Maybe the CameraPreview is part of the Problem/Solution…

Has been fixed!