Hi, cp from OH. This sounded like a perfect solution, but it's not working on Pages and Siri. It did work on Google Chrome. Siri, in fact, won't let me turn off the options, because they are "grayed out" and non-selectable. Pages, interestingly, did not have Text Replacement checked, and yet it is the worst offender.
The heart of the problem is that, on my Mac, simply typing in the letters of the Text Replacement causes the replacement to happen, even though I keep typing. That doesn't happen on my iPhone, on which I can easily override the Text Replacement.
For example, I have "ho" programmed to automatically give me the option of "However," – a very useful replacement. On my iPhone, typing anything will override the replacement. On my Mac, however (see, I use that word a lot), if I type "hope" and look at my screen, I see that it has typed "Howeverpe"!
In other words, the text replacement happens no matter what on the Mac. This would be irritating enough, but I just recently heard from someone that my home address (!) had accidentally shown up in an online-published document. How? Because of this annoying bug in Text Replacement in Pages on the Mac! It inserted itself into something else!
Thank you for your suggestion. It looks like the "Edit > Substitutions > Show Substitutions > Text Replacement" function was designed to fix exactly this problem. It's simply not doing what it is supposed to do on Apple programs. (It's ironic that it did solve the problem on Google Chrome. Hah!)
So, I wonder if this is a bug with Catalina, since your solution should be working. Any ideas of what to do? I did change the letters/numbers that triggered my address to show up, and other items I thought might be a security risk, but I can't possibly do that for everything. And I use a ton of text replacements to make my iMessaging super fast, so I don't want to delete all of them.
If I could just turn it off on my Mac! Please let me know any ideas you have, so I won't keep seeing things like "Howeverpe."
Thanks!