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macOS Sequoia 15.4 - Bug fixes, changes, and more

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
WilliApple

WilliApple

macrumors 65816
Original poster
Feb 19, 2022
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Copy of Copy of Copy of Copy of Copy of Copy of Copy of Copy of Copy of Copy of Copy of Copy o...png

Release Date ― March 31, 2025
Build Number ― 24E248
Apple Silicon System Firmware Version ― 11881.101.1
T2 BridgeOS System Firmware Version ― 22.16.14248.0.0,0
New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
  • AirDropping from an iPhone to a Mac may freeze out in some cases
    • Issue present since macOS 15.2/iOS 18.2
New Issues
  • Picking desktop wallpaper colors from the Apple color picker no longer works.
    • Issue present since macOS 15.4
    • Workaround: Use a static color image

Remaining Issues
Untested Issues
  • Alarms may not play when your display is asleep for a long period of time (FB10086690)
    • Workaround: Make your display not fall asleep in Settings > Lock Screen > Turn display off on ____ when inactive. You can turn your brightness off.
    • Issue present since macOS 13.0
Additional Notes
  • Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.
  • When a new macOS release comes out, all issues automatically go to "Untested Issues" until they are moved by someone. Issues that stay in Untested for 3 releases (beta or smooth) will be removed from all future threads. When there is a new macOS release, please be sure to let us know about the issue's status by moving it to either "Remaining Issues" or "Resolved Issues"
  • macOS 15 Sequoia will be installed via a Delta Update in System Settings. Please be aware about this and the update won’t install with an installer.
  • macOS 15 is officially supported on the following devices. If your device is not listed below, it has unfortunately been dropped by Apple. Any efforts of trying to get your Mac running macOS 15, including bugs should be discussed in this thread.
    • MacBook Air: Intel 2020, M1, M2, M3, M4
    • MacBook Pro: 2018, 2019, Intel 2020, M1, M1 Pro/M1 Max, M2, M2 Pro/M2 Max, M3/M3 Pro/M3 Max, M4/M4 Pro/M4 Max
    • Mac mini: 2018, M1, M2/M2 Pro, M4/M4 Pro
    • iMac: Pro 2017, 4K 2019, 5K 2019, 5K 2020, M1, M3, M4
    • Mac Pro: 2019, M2 Ultra
    • Mac Studio: M1 Max/Ultra, M2 Max/Ultra, M3 Ultra, M4 Max
  • macOS Sequoia 15.4 Release Notes
  • macOS Sequoia Overview
  • macOS 15 Release Notes
  • Apple Security Updates
  • Become an Apple Beta Tester
  • Full Installer (App Store) (Pending)
  • Full Installer (Direct Download)

Feel free to add in any issues or new features that you have spotted in this release by clicking the "Edit" button below.
 
Last edited:
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No update showing up no full installer found, seems I have to do it after sleeping. Good Night!
 
Adora said:
No update showing up no full installer found, seems I have to do it after sleeping. Good Night!
Click to expand...
Mmmm, no update showing for me too. RC2 was 247. PS good night! Installed now.
 

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I installed this. The "Show Priority Messages" in Mail is disabled (grayed out) for mailboxes for all Mail accounts except for iCloud. There is no way to enable it for me for "All Inboxes" or my Yahoo Mail account.

In iOS and iPad 18.4 the "show priority" shows up for all mail accounts and on "All Inboxes". Can anyone confirm this doesn't work in MacOS 15.4?
 
macOS 15.4 introduces a new bug.

For all the MacOS versions going back years I could choose the desktop background colour using the colour picker.

Now this fails, with the desktop being "very white" no matter which colour I choose.

Note you can still choose animated or images, and you can choose one of the preselected coloured circles, but not from the colour picker (accessed by clicking "+" in the current version of the config pane).
 
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A couple external drives aren’t showing in Disk Utility after updating. That’s a bummer.
 
Anyone else noticing that the unread badge for the Mail app now includes unread Trash emails too?
 
major bug for me, my raw files from canon 5d mark iv wont let me quick view preview, its just black, I thought my photos were corrupted but its only quick view. can anyone else check what has happened to raw previews
 
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WilliApple said:
View attachment 2497565
Release Date ― March 31, 2025
Build Number ― 24E248
Apple Silicon System Firmware Version ― 11881.101.1
T2 BridgeOS System Firmware Version ― Pending
New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
  • AirDropping from an iPhone to a Mac may freeze out in some cases
    • Issue present since macOS 15.2/iOS 18.2
New Issues
  • Picking desktop wallpaper colours from the Apple colour picker no longer works.

Remaining Issues
Untested Issues
  • Alarms may not play when your display is asleep for a long period of time (FB10086690)
    • Workaround: Make your display not fall asleep in Settings > Lock Screen > Turn display off on ____ when inactive. You can turn your brightness off.
    • Issue present since macOS 13.0
Additional Notes
  • Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.
  • When a new macOS release comes out, all issues automatically go to "Untested Issues" until they are moved by someone. Issues that stay in Untested for 3 releases (beta or smooth) will be removed from all future threads. When there is a new macOS release, please be sure to let us know about the issue's status by moving it to either "Remaining Issues" or "Resolved Issues"
  • macOS 15 Sequoia will be installed via a Delta Update in System Settings. Please be aware about this and the update won’t install with an installer.
  • macOS 15 is officially supported on the following devices. If your device is not listed below, it has unfortunately been dropped by Apple. Any efforts of trying to get your Mac running macOS 15, including bugs should be discussed in this thread.
    • MacBook Air: Intel 2020, M1, M2, M3, M4
    • MacBook Pro: 2018, 2019, Intel 2020, M1, M1 Pro/M1 Max, M2, M2 Pro/M2 Max, M3/M3 Pro/M3 Max, M4/M4 Pro/M4 Max
    • Mac mini: 2018, M1, M2/M2 Pro, M4/M4 Pro
    • iMac: Pro 2017, 4K 2019, 5K 2019, 5K 2020, M1, M3, M4
    • Mac Pro: 2019, M2 Ultra
    • Mac Studio: M1 Max/Ultra, M2 Max/Ultra, M3 Ultra, M4 Max
  • macOS Sequoia 15.4 Release Notes
  • macOS Sequoia Overview
  • macOS 15 Release Notes
  • Apple Security Updates
  • Become an Apple Beta Tester
  • Full Installer (App Store) (Pending)
  • Full Installer (Direct Download) (Pending)

Feel free to add in any issues or new features that you have spotted in this release by clicking the "Edit" button below.
Click to expand...
I updated and mail won't send...I set up email to send using Apple Mail, click on the Send icon, it goes grey and...nothing...mail does not send, icon stays greyed out. Quit mail, try it again, same thing. Grrr.

Also cannot buy anything from app store or apple tv...the option is not there. 15.4 is pretty buggy...if these are the ones I have found, I am betting there are plenty more. Apple advisors unable to do anything, no idea how to handle this.

-----

Next day...I can now buy from the app store but not music or movies or tv shows...so Apple is slowly responding to these errors.

-----
With my 8th apple advisor we did some actual troubleshooting, the problem persists, so escalated to engineers. We did figure out it is user specific, in other words when I created a test user these issues did not appear.
 
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I read here that now Apple Intelligence is available also for Italian:

www.apple.com

Le funzioni di Apple Intelligence ora sono disponibili in italiano

Da oggi Apple Intelligence è disponibile per più utenti nel mondo grazie al supporto per otto nuove lingue.
www.apple.com

However, this is the Siri pane in System Settings:
Screenshot 2025-04-01 at 08.19.19.png


So nothing changed.

Is there anyone who knows something more about this?

Additionally, Image Playground does not seem that intelligent:


Screenshot 2025-04-01 at 08.26.14.png
 
Last edited:
lordthistle said:
I read here that now Apple Intelligence is available also for Italian:

www.apple.com

Le funzioni di Apple Intelligence ora sono disponibili in italiano

Da oggi Apple Intelligence è disponibile per più utenti nel mondo grazie al supporto per otto nuove lingue.
www.apple.com

However, this is the Siri pane in System Settings:
View attachment 2497786

So nothing changed.

Is there anyone who knows something more about this?

Additionally, Image Playground does not seem that intelligent:


View attachment 2497789
Click to expand...
Siri language must be set to match system language - otherwise Apple Intelligence can not be enabled. Even if when one is English UK and other is English US it is not possible to enable Apple Intelligence.
 
lordthistle said:
I read here that now Apple Intelligence is available also for Italian:

www.apple.com

Le funzioni di Apple Intelligence ora sono disponibili in italiano

Da oggi Apple Intelligence è disponibile per più utenti nel mondo grazie al supporto per otto nuove lingue.
www.apple.com

However, this is the Siri pane in System Settings:
View attachment 2497786

So nothing changed.

Is there anyone who knows something more about this?

Additionally, Image Playground does not seem that intelligent:


View attachment 2497789
Click to expand...

System- and Siri language have to be both set to Italian to make the new Siri work.

Image Playground will only work after having the new Siri loaded (all modules downloaded)
 
Last edited:
cleanton said:
Restart in the safe mod
Click to expand...
FYIW, I ended up uninstalling Microsoft Defender and that fixed it. I first tried a reboot, then a reboot into Safe Mode. Then I noticed Safari hanging when trying to get to any pages at all, along with Finder being slower than it should be, and my two drives not mounting. Checked Activity Monitor and Safari was at something like 400% CPU, but then Defender was right behind it. I had had an issue with Microsoft Defender in the past and removed it, not sure why I reinstalled it but after removing it and rebooting, everything's loading up super quick again. It also looked like Defender was using up to about 10GB of Memory, too! Yikes..
 
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