Yep, that's what I was testing above.
It looks like after the cutover, data is being written to the database with a different encoding than before. So new posts will be OK, but old posts will look funny.
For the thread titles and sluglines, a mod could go and edit them, and then they should be OK.
The pedant in me wants to go through every record in the database, check the encoding, and recode it if necessary. But that would be a lot of work, and risk, for something with only a small amount of benefit.
I fixed the Bitches é issue.
On buffistas.org/index.php I'm seeing the black diamond with question mark in the description text for Buffista Music 4, after "Mekons"
I noticed something odd about the posts that need fixing, i.e. the ones that now have a ⬧. When I go into edit one, nothing appears in the edit text box. I don't mean the ⬧, I mean the entire post is gone. I don't have time to look into it right now. My first guess is that the ⬧ is causing the contents to not escape properly?
The next find in the diamond hunt is in the quote display:
I know I'm a bad poet, but I'm a good man. All I ask is that... is that you try to see me⬧
William, 'Fool for Love
I just tried to fix it using the quote editor, but the system keeps giving me a fatal error when I try to save the repaired version.
I got a fatal error when fixing a slug, but the new slug was saved regardless. I think it's been that way for a long time.