I am using terra and having the sun rotate,it seems like at sunrise/set, trees on higher terrain will have their shadows float on lower terrain, I think because terra's shadow isnt matching the item location, IDK. Here's an image.
https://pasteboard.co/J6FWsf3.png
A lot of time, shadows are stretched properly, but sometimes, it seems like they aren't. That, or the terra shadow isn't being stretched, I don't know what's going on, TBH.
EXP Shadows, backface=false