Cannot change keyboard layout or use emoji keyboard on iPhone Mirroring after updating to iOS 18.5 and macOS Sequoia 15.5

I also encountered a similar problem (iOS 18.5, macOS 15.5), but the issue was resolved after I enabled "Select next source in input menu" in the "Keyboard Shortcuts" settings of macOS and set it to Ctrl + Space (as shown in the following figure), and now I can normally switch keyboards in iPhone Mirroring using Ctrl + Space.

I hope this solution can help those in need.

Maybe it helps someone. The only way to use a different keyboard layout I found atm is to switch the language on the Mirroring app itself before connecting to the phone (on the app's lock screen). The selected language/layout stays during all over the mirroring session.

Emoji short cut doesn't work as well while mirroring with my iphone.

I've got Iphone 15pro/18.5 OS. Mac-air (2024) Sequoia 15.5. After the latest update. The control/command/space bar to activate emojis has stopped working. My lame work around right now is. While messaging. When I want to use an emoji. I will click on the mac desktop. It puts the Iphone in the background. I hit the fn/globe key. it brings up the Macbook emojis and I drag and drop that emoji into the message. Ughhh. It's lame and it's reduced my emoji utilization by 96%.

Please fix Apple. It's killing me smallz!

I am experiencing the same issues as other users and can confirm that ctrl-space does not work when the shortcut option has been checked. Caps lock does not work even though it's enabled in my settings in iOS, and the globe key does not work either. None of the methods of switching languages that worked before iOS 18.5 work now, and there is no longer any way to switch languages once you're in iPhone Mirroring. I submitted a bug report to Apple last week but have not heard anything back from them.

I have tried everything, even reinstalling macOS, but nothing has worked. I am convinced at this point that it's a bug in iOS 18.5 that they introduced and there's nothing we can do about it.

Have you made sure that your keyboard settings on your phone are still what you had made them before the update? What different keyboards do you have on settings / general / keyboard / keyboards?

I used to use the Caps Lock key to switch keyboards layout (aka IME). Same as the OP, I started to encounter this issue since update to 18.5.

I did not modify any settings. And I've confirmed the `Caps Lock Language Switch` is still enabled. Re-enabling it does not help.

I type in multiple languages and this defect makes the mirroring feature useless. I had to pick up my phone to type.

Hope this can be fixed soon!

I can confirm that toggling input source switch shortcut doesn't help. The language inside the iPhone always stays the same after pressing Ctrl+Space and doesn't switch even though I get the language popup and the language changes in the Menu bar on top.

It's only partially fixed. While it's now possible to switch languages, sometimes it will get stuck with 1 or 2 languages, even though I have 3, indicating the switch on Globe key in the popup, but leaving the actual layout on the same language. If I switch to the Emoji keyboard and then switch the language with the emoji Search input focused, I'm able to select the actual language that I want (maybe it has something to do with the presence of the emoji option in the regular language switch and its lack in the language switch when it's called from within the emoji popup?).

Does by chance control space work instead of Fn/globe?

Does control space not work even when the box for that in the macOS keyboard shortcuts settings has been checked?

This worked for me. Also, the password input of Mirroring app only allow you to select english IME, but you can change focus to any other app and select the IME you want.