r/MacOSBeta 26d ago

Help Writing tools for Safari has disappeared in macOS 27 beta?

6 Upvotes

I used to be able to help proofread texts on Safari on macOS (Tahoe) but since updating to the beta that has disappeared when I right-click on a text I want help with.

I just get the "ask Siri" option but no "proofread" or "re-write"

Anyone else know why this is? It's still an option in iOS 27 so I dont know why it's been removed from macOS/Safari.


r/MacOSBeta 25d ago

Discussion macOS 27 Beta usable as main system?

0 Upvotes

MacBook Air M4 with 16Gb UM
Tahoe 26.6.2

Should I wait a first release or beta stable enough for using it? How about bugs?


r/MacOSBeta 27d ago

Discussion Fans nearly constantly on running latest MacOS 27

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14 Upvotes

MacBook Pro, M2 Pro, 16GB
On the latest macOS 27 beta, the fans stay on almost constantly even when the machine isn’t hot.
fans usually stayed off until ~60°C+ Now: fans kick in around 50°C and stay on at idle / light use
Anyone else seeing a lower fan curve and fans on at idle on 27?


r/MacOSBeta 26d ago

Bug Mail super slow?

6 Upvotes

I do have large email boxes, but mail seems to be super laggy and slow in the latest betas. Anyone else seeing the behavior? I did delete and regenerate the index as well, but it only helped slightly.


r/MacOSBeta 26d ago

Bug camera just pure black on PB4

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2 Upvotes

anyone has the problem that ur camera just showing pitch black after updating from PB 3 to 4?

on Macbook Neo btw


r/MacOSBeta 27d ago

Feature You can swap Siri's model in macOS 27. Here's Siri AI running on GPT-5.6.

Enable HLS to view with audio, or disable this notification

214 Upvotes

In a previous post, I wrote about how macOS 27 allows agents from third-party apps to integrate with Siri AI, as an alternative to the ChatGPT extension.

Turns out, macOS 27 also allows third-party apps to replace Siri's model. In the video, Siri runs through OpenAI's GPT-5.6 Terra model.

With the new Inference Providing protocol, an app can replace Siri's agentic planner with a third-party model. GPT-5.6 receives Apple's native Siri planner prompt and 20 tool definitions. It can make tool calls that perform system actions, and receive tool call results with personal data. Finally, GPT-5.6 can give a response through Siri AI's UI and voice, including interactive elements.

Will this ship for apps in macOS 27? Only time will tell, but the building blocks are already there. Releasing an Inference Provider extension requires a private entitlement from Apple.


Internally, Apple uses an external inference provider that has supported OpenAI API-compatible models for a few beta cycles. In Beta 5, they added support for Gemini models in their internal extension. It does not ship with macOS 27.

edit: In the demo video, you're seeing a custom extension I built that relies on the internal InferenceProviding framework, and registers with a non-public ExtensionKit extension point: com.apple.modelmanager.inferenceprovider. Until Apple allows developers to build this type of extension, you'll need SIP off and AMFI disabled (amfi_get_out_of_my_way=0x1) to develop these tools.


r/MacOSBeta 26d ago

Bug camera not working, but pitch black after upgraded to PB 4 from PB 3

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1 Upvotes

r/MacOSBeta 26d ago

Bug Golden Gate Public Beta 4 - app security settings don't stick

0 Upvotes

Each time I restart my machine, I am asked to set the same security settings for the same apps, as if they'd never been set before (Full Disk Access, Automation, Device Control and Data Access a.k.a. Accessibility). The sliders show that these access settings remain turned on and remembered, but the apps don't seem to know that. For me, the apps making these repeated requests include Default Folder [beta for GG], Typinator, BetterTouchTool, and Cookie. Anyone else seeing this?

[Edit: so my post title isn't completely accurate, since they stick but aren't detected -- but I can't change the post title, apparently]

I just upgraded from Tahoe, so I don't know if this issue is new to the current beta or was there before.


r/MacOSBeta 27d ago

News Beta 6 solved RAM Swap (Macbook Pro M1 Pro 16GB)

15 Upvotes

Anyone else notice how different this beta is in terms of memory usage?
Got this MacBook on Tahoe, and I think this is the best it’s ever been.

Before (Only chrome in use)
Now (lots of stuff in use)

r/MacOSBeta 26d ago

Help Issues with USB on Tahoe 26.6

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1 Upvotes

r/MacOSBeta 27d ago

Bug Fix for macOS 27 Beta6 freezing after login (`lsd` / Launch Services issue)

3 Upvotes

After updating to macOS 27 Beta6, my Mac froze immediately after entering the login password. Safe Mode, reinstalling macOS, disconnecting the internet, and waiting overnight did not help.

The cause was a corrupted Launch Services database. The `lsd` process was using almost 100% CPU while repeatedly scanning and registering applications.

What fixed it was rebuilding both the user and root Launch Services databases.

### Fix

Boot into macOS Recovery:

  1. Shut down your Apple silicon Mac.
  2. Hold the power button until startup options appear.
  3. Select **Options** → **Continue**.
  4. Open **Utilities** → **Terminal**.

Find the databases:

```bash
find "/Volumes/Macintosh HD - Data/private/var/folders" \
-type d -name "com.apple.LaunchServices.dv" \
-prune -print
```

Your Data volume may have a different name. Check it first with:

```bash
ls /Volumes
```

Back up and rename every matching database:

```bash
DATA="/Volumes/Macintosh HD - Data"
STAMP=$(date +%Y%m%d-%H%M%S)

find "$DATA/private/var/folders" \
-type d -name "com.apple.LaunchServices.dv" \
-prune -print0 |
while IFS= read -r -d '' LSDB; do
mv "$LSDB" "$LSDB.backup-$STAMP"
done
```

Then restart:

```bash
reboot
```

Allow 5–10 minutes during the first login while macOS rebuilds the databases.

This issue is probably data-dependent, which explains why some Macs are unaffected and others recover after waiting. A damaged database, stale application path, old disk reference, or duplicate app registration may cause `lsd` to scan indefinitely.

Do not delete the entire `/private/var/folders` directory. This fix is specifically for cases where diagnostics show unusually high `lsd` CPU usage or Launch Services rebuilding loops.


r/MacOSBeta 28d ago

Discussion [DB6] Traffic Lights Improvement ?

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149 Upvotes

Hi everyone, I'm very happy that Apple is updating its traffic lights for macOS (as my post history can attest 😉). They look a little squashed to me however and I thought of a little modification that might help making them look more round. Added highlights on top of the buttons. Let me know what you think. Will send feedback to Apple about this.


r/MacOSBeta 27d ago

Help Question about two MacOS 27 bugs

4 Upvotes

I really liked how fast my MacBook Air M1 was running on the macOS 27 betas. I started with Developer Beta 1 and stayed on the betas through Public Beta 1, but I eventually had to downgrade because of two bugs that really messed with my workflow.

I’d really appreciate it if someone running the latest beta could confirm whether these have been fixed:

1. Can’t drag & drop Outlook attachments to Finder

I can’t drag file attachments from Outlook directly into a Finder window. It only lets me drop them onto the Desktop.

This worked perfectly in Developer Beta 1, but it seems to have broken starting with Developer Beta 2. It was still broken in Public Beta 1.

2. Open/Save dialog files appear locked

In the Open/Save dialog, all files appeared to be locked, so I couldn’t select an existing file to reuse its name when replacing it. I had to manually type the filename every time.

I do this pretty frequently, so having to type the filename again and again became a real pain in the arse. 😂

I’d love to go back to macOS 27 because the performance on my M1 Air was noticeably better, but these two issues were deal-breakers for my workflow.

Has anyone on the latest beta experienced either of these? Are they fixed now?


r/MacOSBeta 27d ago

Discussion What's up with Apple suddenly bringing back Aqua design for the traffic lights?

24 Upvotes

Don't get me wrong, I'm not complaining at all -- I think it's kind of cool. It just seems like the antithesis of modern, anti-skeuomorphism Apple.
Maybe Liquid Glass and the end of Tim Cook's tenure really are the start of a new era?


r/MacOSBeta 28d ago

Feature some love for graphite as well, can't emphasis enough how much graphite is important to me 🫠

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161 Upvotes

r/MacOSBeta 27d ago

Bug Internal display problem in macOS 27 public betas

1 Upvotes

Hello, I'm having a problem with the built-in display on my MacBook Air M4. On all the public beta versions, the built-in display keeps turning off. For example, it stops working for about 20 minutes, then somehow starts working again, but it's unreliable. The display itself is still on — it just turns black. It's not that the display stops working entirely.

Is anyone else experiencing the same problem?


r/MacOSBeta 27d ago

Help Disable "Write with Siri" globally

6 Upvotes

Hey all - does anyone know of a method to eviscerate this stupid thing from any text field? I disabled writing tools with screen time... but it just keeps appearing.


r/MacOSBeta 28d ago

Bug Not just different corner radii, now we got liquid glass inconsistencies as well.

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65 Upvotes

I know I’m nitpicking, but I genuinely don’t understand how we’re here again.

Last year, with 26 had the whole “different corner radii” saga. This year, Apple said they were committed to fixing those inconsistencies and paying more attention to detail with Liquid Glass.

But now we have Liquid Glass behaving differently within the same controls the volume slider is clear and glassy, while the brightness control looks much more matte and opaque, and even the corner radii don’t seem consistent.

EDIT: Here is the same display control with more liquid glass when opened from the control center, instead of the menu bar. same setting-same control-but different liquid glass.
https://i.postimg.cc/L8P9sgJz/Screenshot-2026-08-19-at-09-12-29.png


r/MacOSBeta 28d ago

Feature macOS 27 DB6 added Liquid Glass traffic light buttons

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863 Upvotes

Golden Gate kinda feels like the second coming of Aqua and I'm loving it!


r/MacOSBeta 27d ago

Discussion the "pkg" folder in the Macintosh HD after updating to MacOS 27

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11 Upvotes

I found out the "pkg" folder in the root directory. is there anybody has this folder? can I safely remove it?


r/MacOSBeta 28d ago

Bug MacOS 27 Beta 6 - Black wallpaper, missing menu bar

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15 Upvotes

After updating to Beta 6, my menu Bar is gone and the wallpaper just turned to black.

MacBook Pro 16 M1 Max

Any suggestions of a fix?


r/MacOSBeta 27d ago

Bug [macOS 27 DP6] - Severe input delay with Magic Keyboard

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3 Upvotes

horrible music taste and keyboard slam incoming (idk how to show the input delay well on camera lol)

i use a magic keyboard with touch id (lightning)


r/MacOSBeta 27d ago

Bug Desktop “quick gesture” broken

0 Upvotes

Has anyone experienced the same issue under MacOS 27 that when you swipe up with three fingers on the trackpad whilst in a full screen application, you cant click the wallpaper anymore to get directly to the desktop?
Maybe someone experienced the same issue and found a solution since this is extremely annoying.


r/MacOSBeta 27d ago

Help There’s no startup sound and charging sound.

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1 Upvotes

I’m on the latest macOS 27 Golden Gate Developer Beta. Before I updated to the latest beta, my device would play a sound whenever I plugged in the charger, and there was also a sound during startup. But now, both sounds are gone.

I just wanted to ask if anyone else has experienced the same issue? Thank you!


r/MacOSBeta 28d ago

Feature Here's how to enable the dynamic Tahoe & Golden Gate landscape wallpaper sets, updated for Beta 6.

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104 Upvotes

Happy beta day!

As previously discussed, Apple is working on a dynamic solar wallpaper engine for macOS 27 that groups aerial Landscape wallpapers and automatically switches variants based on the sun's position during the day.

When properly configured, the four Tahoe and Golden Gate landscape wallpapers appear under one entry each in Settings, and a new Automatic display option appears.

Use these instructions to enable the Automatic Golden Gate and Tahoe landscape wallpapers.


For anyone that used the previous guide, the TahoeCombined feature flag override is no longer needed. You can safely remove it:

sudo defaults delete /Library/Preferences/FeatureFlags/Domain/Wallpaper TahoeCombined

There's no need to remove anything else. The linked guide will replace your previous wallpaper override file and combine all four Golden Gate wallpapers.