Instead of coin's year there is "Undetermined"

Am I the only one seeing “Undetermined” in the place under the coins where there used to be the year number? I see this in a list of coins under user's profile. With euro CC's the text and more detailed information will give the year when opening the coin page but when wanting to swap regulars, this is impossible since I don't see the year what the other user has entered. I just tried opening somebody's profile in Private mode in my Opera browser and it showed the years the same way: some of them have but mostly not. Edge browser shows it the same way. I couldn't find any information about this bug in forum so I eventually decided to ask. I've seen it already many months ago.

If a user enters a coin in the undetermined line it will of course not display a specific year.

I guess that some users blindly click on the ‘Add to my collection’ symbol above the year line section and don't change to the correct line if there is more then one year line and click add.

Thank you for showing this! It looks like I checked too little number of profiles to have a better picture. Having checked older swaps and lists of their current coins I can see the years so it is not a general problem. I will ask the users then to fill out the data properly with whom I'd like to swap.

Thank you again!