Since a few days the wiki Map Features is missing a lot of chapters.
E.g. man_made is showing:
But for many more keys it is not showing any of the familiar tables with values for that given key.
Left a comment here: https://wiki.openstreetmap.org/wiki/Talk:Taginfo/Taglists#Taglist_no_longer_working
Seems to be some side effect of a Wiki software update a couple of days ago.
Joto reports the issue has been fixed by the sysadmins in the meantime.