Don't think it has anything to do with forum. Most likely it's something specific to the text editor Acorn is using.
I've got it.... (I think)..... Acorn uses the single left and right quote marks.... often. That is what appears to get converted to Unicode. I just went to one of her posts on a totally different thread where she had set off terms with the left and right single quote (UniCode %u2018 and %u2019) and did an inline edit. As soon as I saved the post (without changing it, just opening it in the inline editor and saving it again) the Unicode appeared. I went back in and changed the Unicode back into single "normal" straight quotes and it is fine... It looks like the In-Line Editor doesn't like those particular 'symbols' (just like it didn't like her Apple Heart Emoji) and replaces the symbol with UniCode... In fact, it could be that the In-Line Editor doesn't recognize them as "characters " but rather as 'Symbols' We, don't SEE the difference on the screen as the font is converted to the Forum Default in the initial post but as soon as the inline editor is invoked,... It tosses a wobbly....
Later edit: OK, I have also seen an example from XYZCF as well where the intiial post was fine and when she edited it ("Last Edit at <time> by xyzcf") the UniCode appeared in place of the single quotes... So, if this is the case and she answers my PM with what I suspect she will, it is an Apple "character substitution" issue where the Left and right quotes replace the single apostrophe in the text editor....
Later later edit - As I suspected, XYZCF is posting fron her iPhone (Apple Device). It is an Apple specific issue with the single quotes being transformed into single open left (%u2018) and single close right (%u2019) marks.
The old forum installation didn't do this. I don't see that this has anything to do with Themes per se but, for example, in the new installation, the "edit" function is vastly different - no preview any more, the way the edit screen opens is different, and there are no longer any Emoji or formatting options shown.....
Me - 61, xW - 54
Together 19 years - Married 17 at separation & 21 at D-Day
S - 17, D - 13
1 Dog
BD#1 - August 2015
Atomic BD - 13 Dec 2015
House sold & separated - Mar 2016
Divorce final 30 August 2019
Moved on in life
Survival Instructions for NewbiesSite Map A "friend" will not "stand by you" no matter what you do. That is NOT a friend. That is an enabler. That is an accomplice.
A
REAL friend will sit you down and tell you to your face to stop being a firetrucking idiot before you ruin your life and the lives of those around you.