To test, we've got feeds and everywhich way!
So this should not show up in various places. Let's find out which ones!
This is now fixed in chat; no more spoilers from either direct url posts, or from rss feeds that are posting SE posts into the room.
UPDATE: It has been fixed for the
Questions page and for the Front page, but feeds still show it. Furthermore, forgot to check last time, but search results also show the spoilers.
Still shows up in mouseover from the question list. (Among other things)