14.3 Mail.app - Corrupted/Garbled Text When Composing Messages

The frequency is partially dependent on the length of them email. If it's a short, quick email, nothing may go amuck.

If it's a multi-paragraph email with various editing and recomposing, then the garbled text mess happens much more often. And, the degree of "garbling" is much worse - like whole sentences and paragraphs moving around / getting overlaid with one and another.

I've not seen it in Safari, for example, typing replies to this thread is fine. So far (for me) it has been just the Apple Mail.

Adding my name to the list. Running 14.3 on an M@ MacAir.

A temporary fix (so I can finish an email) has been to resize the Mail.app composing window. I will record and take screen shots so I can call tech support and get it escalated (like others have suggested) to make sure enough higher-ups are aware.

I'm having the same issues: M2 Max laptop, Sonoma 14.3. And it's driving me NUTS. If I had the option to write two sentence emails, I would text.

Once the text garbling starts, I've resorted to saving the offending email as a draft and rebooting. Then I'm good for one or two emails before it starts again. OR I've also been composing emails in Word or Pages or InDesign and then copying/pasting them over to my email. Neither are acceptable.

Please fix Apple!

I appreciate anyone raising a hand or posting. It shows how many are dealing with this insanity and the hope it gets fixed! I have stopped doing any lengthy emails because of it and try not to email (impossible). I have attempted other emails Google , Protonmail, and the same issue persists. I have seen display issues on Safari and in messages as well. This bug/display is not just an email-related issue.

Thank you all for who are posting. Yes, me too, or raising a hand. It is helpful when someone is searching for wtf is going on and looking for a fix to this issue. It is not your device. It is an Apple buck-up & we are all waiting for an update to resolve it.

I've got the problem on a new iMac M3 and a 2019 iMac Intel i9, both running Sonoma 14.3.

I have experienced the same. I think it even happens in Safari. I witnessed, that in a Safari text box my written text suddenly wraps around, seemingly unnecessary. At first, I thought it was just some kind of late readjusting. Later on I witnessed the same behaviour in Apple Mail and then I saw that it wasn't just a readjusting, but my text was replaced with the paragraph above. And that's why the computer had to readjust the text, since it changed.

I think the same happened in the Safari text box.

That's a nasty bug and I hope Apple fixes it soon. At least I am not alone with it which makes it more likely to be addressed rapidly.

I am on an M1 Max MacBook Pro.

I'd said yesterday that I hadn't had the problem in a couple of days after starting my MacBook Air in Safe Mode. But today the problem occurred while in Safe Mode so just wanted to report that.

Thanks to the folks who identified the problem as being associated with the inline predictive text feature. That kind of figures. At least we have a specific cause. Hope it doesn't take long for Apple to fix it.

I'm having the same problem and it's not just with Apple Mail. I'm having it with editing text in web forums with Safari which would use the same text editing engine as Apple Mail. At first I thought it was specific to one web forum but then found it was happening in Mail, too.

I didn't install the safari beta but I did turn on lockdown mode on my Mac and restarted. Then I tried to see if it would happen in mail typing many paragraphs but it didn't happen. Not sure if this helps or if you were using lockdown mode. I only tried one email though so will have to see if this makes any difference. I wasn't using lockdown mode when this text issue kept happening. I am using a 2018 Mac mini Intel model.

Does the 14.3.1 update fix it? I sent in feedback with a link to this thread the day before it came out so maybe that helped?

https://www.macworld.com/article/2231364/macos-sonoma-14-3-1-duplicate-overlapping-text-bug-fix.html

I can see this happening on my system as well (15-inch M2, Sonoma 14.3). It looks like an issue with Apple's WebKit. Has there been any update for FB13557502?

It's been happening to me also on my 2018 Mac mini and running 14.3. Started since the 14.3 update. I was glad to find this post since I didn't know what was going on. It makes trying to write a email so frustrating with lines of text moving around, large spacing also forming and disappearing. Text overlaying on top of other text.

Sad to have no peace even trying to type a email now. Always so many bugs. I did send feedback in the app on the Mac to apple. Couldn't even switch users today from the menu bar. Fast user switching wasn't responding. I wanted to update for the security fixes of 14.3 but think I will hold off in the future. I don't know. All these bugs are making using my Mac even worse.