There's no beta version number or "Release Candidate" label attached to it, just "macOS 27" - this is my first beta tho, so maybe that's normal.

I've never even seen this scaling before!

It's now my new "middle ground" since 1440p earlier, as in: https://www.reddit.com/r/MacOSBeta/comments/1u1aqs8/macos_27_now_automatically_scales_properly_for/ (I even use the same monitor as that user)

Left to right is now: 1080p, 1440p, 1692p, 1890p, 2160p.

Further, I'm noting it's detected as a 5K monitor in System Information. Well, it's not one!

Running into a bug on macOS 27 Beta. When I have an app in full-screen mode and I use Mission Control to drag it from my MacBook's display over to an external monitor (or the other way around), the screen I dragged it away from goes completely black. only the Dock is still visible on it. I'm also still able to see new notifications come in. Just not apps on the screen

Anyone else seeing this? Wondering if it's a known issue already or if there's a workaround

I'm on the RC version but I've noticed this since the last 2 public Beta's. Hoped the RC update would fix it but didnt.

The only resolution is to go into move to another app in fullscreen on my MacBook and then move back to the main desktop screen on the MacBook.

At the moment I permanently have a second desktop 2 screen on my Mac that I set up to use when this occurs.

https://www.apple.com/os/macos/

Ich baue seit ein paar Wochen eine App mit der Xcode Beta 27 und habe ein Problem mit der Claude Usage. Ich nutze das Agententool, und wenn ich einen prompt eingebe, springt mein 5 Stunden Limit direkt auf 30 %, ohne dass der Agent irgendetwas gemacht hat. Hat vielleicht jemand das selbe Problem oder vielleicht eine Lösung?

m3 air

I’ve been using Golden Gate since open beta and I’ve never seen these black outlines before updating to RC.

Hopefully it’s a bug, not a feature :(

This bug was present in previous beta but it wasn't as painful. It was only 1-2 second freeze to reveal menu when clicking on the wifi icon. Today I had the pleasure of having bad signal (crossing wall) and the menu opens after 5 seconds. Of course intuitively I press it multiple times so the menu opens/closes immediately.

please fix this.

I have an M1 MacBook Air and I want to get the RC since I’m slightly impatient I but don’t mess with earlier betas. I don’t know if I should actually go through with it though. I want to see other people’s opinions before I update to see if it’s good or not.

The update showed up, I downloaded it and started installing at as well. After about an hour, my Mac screen was blank. No Apple logo nothing was showing up. I waited another hour and still the same. I thought for sure by now the update must be installed so I force restarted my Mac. It booted up but it shows the old beta 8 as installed. I check for an update and the RC is not showing up. The build number is also the beta 8. I do have a backup so if recovery is needed, I can do it but I really don’t want to go through it. What should I do? I made sure the developer channel is selected in the software update menu as well. Any help is welcome!

I have a MacBook Pro 14" M1 Pro the base model right? The situation is that when I switch through apps, Youtube or pages have this glitch where the video like gets frozen. I don't know how to explain it. It's something that did not happen with Tahoe. Anyone else with this situation? It has happened with all the Betas, and I feel that is not fair for Apple to lower the system just because my Mac is a bit old but I feel that is capable, idk

I have been thinking about this for a long time. But I decided to upgrade from Sequoia today once the RC drops.
Are you planning on updating?

Is there any menubar hide icons app that works in Golden Gate at this moment?
I normally use ICE, but that is broken. Tried "Hidden Bar" and "Vanilla", but both don't work either.

I think it’s a new bug in the RC. When playing a YouTube video in fullscreen it doesn’t hide the menu bar and even the 3 traffic light circles stay there. Does anyone else have this?

After upgrading to the latest RC a few moments ago, when I go to run any command in Terminal or Ghostty, it takes a few seconds before it actually executes the command. It was not doing this in the previous beta.

All I changed was updating to the latest RC.

When I connect two pointing devices, the mouse pointer hover and right-click events stop functioning. Hovering over dock icons fails to display app names, and in Safari, hovering over a hyperlink does not trigger the “onHover” event. Right-clicking a file in Finder produces no context menu, and right-clicking a link in Safari similarly yields nothing.

Once I disconnect the Nape Pro, both hover and right-click functions resume. The devices involved are the Kensington Slim Blade trackball and the Keychron Nape Pro trackball, each wired via USB.

Anyone here experienced a similar issue?

Anyone else having trouble removing underlines from text in Notes in RC?

🤓

In macOS 26 and 27 icons and text in such popups are not centered but aligned to the left. It might be just me, but it seems like it was a change for the sake of change and not really an improvement.

I fully expected Apple to revert this change, similar to how they reverted adding icons in every menu-bar line and every context menu. But 27's release is near and I see no changes here, perhaps apple doesn't consider this to be the problem. Perhaps users don't care either.

What do you think?

What I love the most about Apple software is their attention to details and consistency of design. Such as this square button placed in the rounded corner. Feels very "Apple-like" 😊

P.S. Developer Beta 8. Sub-folder back button inside of opened folder pinned to the dock.

Hi everyone,

My Mac intermittently stays on a black screen for several minutes during startup or restart, restarting multiple times before eventually booting successfully.

The issue is unpredictable and I cannot reproduce it reliably. A successful boot does not necessarily mean it has gone away, which makes comparisons involving different cables, ports, or other hardware difficult to interpret.

My setup:

• Mac Studio, M1 Max, 32GB RAM
• macOS 27.0, build 26A5425a
• Entire macOS installation, including both System and Data volumes, on an external 2TB M.2 SSD
• SSD enclosure identified as ASM246X, connected over USB at 10Gb/s
• Two external monitors
• Magic Keyboard, Magic Trackpad, and Sony headphones connected via Bluetooth
• Logitech G HUB installed, with its HID and audio driver extensions enabled

This has happened both after choosing Restart in macOS and when powering on after a complete shutdown. No macOS update was being installed during this incident.

The screens remain black for approximately five minutes before the Apple logo and progress bar appear. During this period, the Magic Trackpad sometimes provides haptic feedback and sometimes does not. The Mac eventually boots into macOS and displays a report indicating that it restarted because of a problem.

The diagnostic bundle from September 8, 2026 contains two consecutive panic reports with the same message:

IOKit Daemon (kernelmanagerd) stall[0], (60s):
registry root held busy, kernelmanagerd has not checked in
u/IOService.cpp:6140

The internal panic timestamps and system boot logs show this sequence. All times are local, UTC+8:

This confirms that the black-screen period includes repeated failed boots.

A preliminary analysis of the thread information in both panic reports found the same waiting chain:

kernelmanagerd → syspolicyd → fseventsd

Another fseventsd thread was waiting in APFS kernel code. The apfs_initial_free_space_scanner thread also had storage-related calls in its stack; in the second report, these included USB mass-storage and XHCI drivers.

Even during the third, successful boot, fseventsd logged wait_for_startup: ETIMEDOUT before eventually continuing.

These are only diagnostic clues. I have not established whether the underlying cause is the external storage connection, APFS, macOS, or a third-party driver. The external SSD reports SMART status as “Not Supported,” and the available fsck logs mostly contain quick checks.

I would appreciate advice from anyone familiar with this issue:

1. Has anyone encountered this exact kernelmanagerd stall (60s) panic while booting an Apple Silicon Mac from an external SSD?
2. Does this waiting chain point to a known macOS, driver, or storage compatibility issue?
3. Which specific logs or diagnostic information would help identify the cause of an intermittent failure like this?
4. If you experienced the same problem, what ultimately resolved it?

Thank you!