Of course, this is a very small bug that does not affect anything, and I would not focus on it if such database problems did not occur frequently. During the past 8 years that I have been managing my collection on this website, I have noticed more than once that when any changes are made in data structure, the data is often distorted. Sometimes I found out that in my collection there are coins that I never had and at the same time the coins that I had disappeared, I suppose this happens when a coin is split into several other coins.
And that what I would like to draw attention of Xavier. Please make sure of data consistency, because when such small glitches occur, collectors are losing confidence in this website.
Thanks.