Please see details on the yearopt parameter for $zdate (https://docs.intersystems.com/iris20232/csp/docbook/DocBook.UI.Page.cls?...) ... depending on the locale and on the year in question, if you don't specify yearopt you risk have a 2 digit year rather than a 4 digit year (default for my locale is yearopt = 0 which would show 20th century years as 2 digits).  You probably want to specify a yearopt of 4 to force 4 digits all the time.

Thank you for the feedback @Julius Kavay - I added a hyperlink to the first use of CCR for those that don't scroll down far enough to see the tags.  I would however suggest that if an acronym is used 8 times in a post and it is tagged with an acronym of the same spelling, then the balance of probably makes it most probable that the acronym in the article has the same meaning as the acronym in the tag ;)  
 

This probably has something to do with the security configuration in the SMP and how session sharing is working.  Sounds like it's starting a new session every time.  I suggest contacting InterSystems Support and they can help you debug the situation.  This definitely should not be the behavior and would certainly be quite disruptive to anyone's workflow!