That is very strange. Is it only folders and not files that have that? If so then your thinking sounds plausible, that somehow you have created some default template.

I wish I could help you more, I'm pretty good with PC's but you have me stumped.

Can you estimate when the behavior started?

There are some people here who know these systems better than I. I hope they can help and I'll keep my eyes open.

Let me know if you figure it out.