Did it Again

Alternate Title: Sunset Surf Shack.

A month ago, I did this puzzle and when I finished it, it was missing two pieces. A couple weeks later when I vacuumed under the puzzle table I found those two missing pieces. So, after finishing the Monument Valley puzzle, I was working on at that time, I decided to do the puzzle again now that I had all the pieces.

When I finished it this second time there was one missing piece! Thing is, it is a totally different piece! I got out a high-powered bike headlight and searched the floor looking for this missing piece. No luck, I don’t know where it went. My guess it slipped into an alternate universe, quite possibly like the 2 original missing pieces. My only hope is in 2 weeks the piece will return magically like those two other ones.

But if it does, do I attempt to try and finish the puzzle again? Am I risking another missing piece, another totally different piece? Another alternate universe?