Yes I have had them disappear and reappear depending on where I'm standing. It's odd...but I've noticed it and thought I was the only one with the issue.

Hi mystique999, that is kind of spooky. I'm not sure what is causing that. I haven't seen them do that but now I will be watching them more closely.

I'm hoping I got rid of the string lights bug. However, I had to remake them from scratch so any old lights already made will still be "haunted." Any newly created light sets should work fine now.