This article, about a web site that had a problem for its Polish users,
https://medium.com/medium-eng/the-curious-case-of-disappearing-polish-s-fa398313d4df
may be of interest to users of this forum, although it's more about computers than type.
Typophile
The Disappearing Polish S
25 years ...
Jan [right Alt + Shift + Z]urawski
Ah; the link failed not because I used the wrong one, but because of a bug in the forum software causing links in the initial post of a thread to go to the wiki instead!
Looks like regular HTTP links do not tickle that bug.
Captured from web.archive.org on 17 Mar 2015. view this capture
Have you tried the link? It does not work for me.