I've written about this before in another thread but I'm 100% convinced this is a thing.
The first example, and there are a few, is fairly minor. I remember the day the trees changed for me. Now I grew up in the country and spent a lot of time in the woods and hunted frequently as a kid. I know the woods well. One day as an adult I went outside and all the tree bark had changed, it was much thicker than it had ever been before. I said something to my wife because I was stunned and she was like, no they've always been that way. No...they ...haven't. At least not in my world. I still can't believe how thick the bark is on some trees here. Maybe my world didn't have woolly rhinos or something. I only learned about them afterwards.
The main example - The high school best friend. When I was in college I worked in an operating room as an orderly. It was good work and paid well. Among our duties was getting patients down from the floor for surgery. On this day the person I was picking up was an infant for a heart transplant. Before any wiseass says anything not every transplant person is on deaths door and if we needed assistance Respiratory etc would meet us there. As I arrived a guy called out my name -Guurn hey Guurn I can't believe it's you! We talked, small talk (I'm good at faking conversation), for about 10 minutes before he realized I had no idea who he was. He informed me that we were best friends through High School, all 4 years, we had a special callout and people used to mistake us for each other and we hung out every day pretty much. He went on but you get the gist. His kid was sick and I didn't want to be an asshole on that day so I pretended the best I could and moved on. After I got home I tried to figure out ways of verifying it. Yep, he had written an entire page in my yearbook, my younger brothers and sisters remembered him, and the one person I still know from high school remembered as well. I don't have a single memory with him in it other than meeting him that day. Not one.
What I do remember is a day at the end of High School when I went to visit my actual best friends. They acted surprised to see me, like we hadn't been friends in a while. It had always confused me until the meeting with my "best friend".