I'm a bit of a grammar nazi myself. I think it might have to do with either your browser or your input device. I think some phones have that problem, too. I've seen it discussed here before.

I post from my home PC on Chrome and don't have the problem. At least to the extent that I can blame my equipment.

I’m bad about posting while waiting for things so am often not at home.

I could scream...

Thought I’d just made a typo, but tried to edit it a couple times and it wouldn’t print the apostrophe.

a special character that DU no longer supports in subject lines. It works fine with standard keyboard apostrophes, as you see in my subject line.

I guarantee that the normal low-ASCII code apostrophe is appearing just fine in subject lines.

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It might have to do with the ASCII code page that's being used here, versus the Unicode on most sites.

Oh, there was some HTML lockdown that occurred a while ago. I think it started then.

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Note: I tried on this post.

they've filtered a number of unicode characters out for rendition in post subject lines.

Some mobile devices automatically substitute the unicode single quote mark when you enter text.

Subject should read... Apostrophe “ ’ ” and the inch character “ ' ” are different characters...

Left quote “
Right quote ”
Single left quote ‘
Single right quote ’ (this is a proper apostrophe)
Inch character " (corrected)
Foot character ' (corrected)

Sometime auto correct will replace the inch and foot characters with typographer's quote characters.

What do you see in this post? It may depend on your device OS.

I thought that was happening when I was in elementary and grammar school.

I think the last update threw DU off.

It didn’t used to. I noticed it a couple of months ago

I had that problem and I went into the settings on my iPhone and turned off some kind of smart grammar or something. It worked.

Just made this adjustment. Yep, it works.

Related to anti hacking software post election?

I’m just not using them in my subject lines at all.

Work. I usually write comments from my IPad so maybe that’s the problem.

no special characters in the subject line

I just don’t want y'all to think I’m ignorant. 😄