I'm using Vector 1.45 and it's the same problem. The untick Frozen surfaces (Winter only) works to restore the area to normal.
One small problem that has appeared is an area of green cutting across the basin area and beyond. This is regardless of the frozen surfaces tick/untick selection.
I doubt that this is anything to do with the latest UK2000 EGLC P3D version as it all looked wonderful in an earlier installation but maybe, if anyone else has this issue then there might be a simple scenery/texture mod to fix this?
This folder link should take you to my screenshots: https://kernow2.smugmug.com/organize/Other/Images-for-Sharing/EGLC