4.2.1 terrain detail problem

Hello. Updating to 4.2.1 has caused some of my terrain detail meshes to not work properly. They worked fine before, but no longer. The meshes look like floating specs. Any ideas what’s wrong? Thanks.

According to the Unity blog. There is absolutely no point in sending in bug reports for anything then the latest version of unity. If you are lucky some other user may know of a fix or workaround…