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Apple Seeds Fourth Beta of macOS Tahoe to Developers

Spotlight and iPhone Mirroring seem to both be fixed so we are off to a better start.
 
cjsuk said:
So much wasted space.

Even windows 11 looks less crappy.
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Yes! That, combined with safari not having a compact view anymore and with the UI being bigger like on a fisher price toy, we have big screens for nothing. If you compare safari on sequoia vs safari on Tahoe you can see that there is less content displayed on Tahoe.
They lost their mind.
 
And still no animated stock screen saver.... Not a complaint I just think It would look cool if the default blue wallpaper would be live like the rest
Screenshot 2025-07-22 at 16.24.17.png
 
cjsuk said:
So much wasted space.

Even windows 11 looks less crappy.
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I just got back into Windows after 20yrs and the amount of bloat you have to remove now or create a custom iso that does it for you on install is insane. Pros and cons but for everyday stuff I’ll stick with macOS.
 
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thertrain said:
Beta 4 is still making my fan spin non-stop :-\

Guess I can wait for two weeks to see if its gets resolved in Beta 5.
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Why do fans run in all beta versions? Yes, I know they are not stable, but what is the exact instability that is causing this, is it the kernel instability, or is it the fact that it is constantly collecting and forwarding data to Apple?
 
I've installed and fortunately have not run into any issues. Really no issues since Beta 2. I will say that I am using Firefox as my main browser and not doing anything too intensive. M4 Mac Mini
 
What does it mean if every markdown file with the .md extension has suddenly disappeared from my iA Writer folder in iCloud Drive? I thought I was going crazy. Found a back up and dragged it back to iCloud Drive. Text files are there and folder structures are there but every markdown file is gone.
I installed the beta during my lunch break today and I noticed the behavior later this afternoon. Trying to drag the files to iCloud Drive from a Mac running Sequoia ends with the same result.
 
Mello Arismar said:
The rounded corners are beautiful and modern, as is the design of the Liquid Glass. If you don't agree, feel free to use Windows 10 with square corners.
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"modern" is entirely subjective. Why must I use another OS just because I think the new theme is terrible? Apple should productize their theming engine and let user decide. Then everybody wins.
 
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Mello Arismar said:
Why do fans run in all beta versions? Yes, I know they are not stable, but what is the exact instability that is causing this, is it the kernel instability, or is it the fact that it is constantly collecting and forwarding data to Apple?
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In System Settings - Privacy & Security:

This is getting always turned on automatically when a beta version is installed or updated:

Screenshot 2025-07-23 at 06.32.57.png


You can try if it helps when you turn it off.
 
Sheepish-Lord said:
I just got back into Windows after 20yrs and the amount of bloat you have to remove now or create a custom iso that does it for you on install is insane. Pros and cons but for everyday stuff I’ll stick with macOS.
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Windows 11 LTSC is fine. I have a workstation and a laptop with it on next to me.
 
DestructoTim said:
Hard disagree. On the the old version you posted the dock looks like something you would get today on a $6 MP3 player from China... The menu bar looks like the ones we had on our middle school Macs in the late 90s. The desktop icon looks like something from a no longer maintained Linux distro. Not only does each element look bad and extremely dated on their own, but combined as a whole they don't even match with each other, which gives a off bad modern Windows vibe where UI is patched together with different styles from different decades. I'll give the wall paper a pass. Ya'll got to let your nostalgia go. Apple rocking something like that today would be like these 30 year old moms and dads that go out in public with full emo attire and embarrass their kids. It's awkward and garish. My apologies for being blunt. It is charming. I would enjoy using a UI like that to browse old websites.. but it has no place in the modern world as a serious UI style. The main stream does not embrace tacky unless the tackiness is intentionally ironic.
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The point I was making is that you can still modernize the OS, and still make it classy - the new os has lost its class and feels like a modern cartoon.
 
On my side, it’s the first time I ever had any issues updating on any Apple platforms. Am a dev, running with xcode beta. So I’m expected to do these things.

MBP M1 Max. When I restarted for b4 installation, I got a energy saving page on my external monitor. Opening the computer lid, I had a black screen there too. I unplugged the monitor and could see a progress bar frozen at the early stages. After 45 minutes, I restarted the machine. As soon as I unlocked the drive, it would return there. I reinstalled the OS, still the same. I reverted to a prior snapshot, still the same.

So this AM, I erased the drive, and I am reinstalling the OS from a blank disk. Doing this now.

It seemed to be caused by an external display somehow, or maybe badly migrated settings between beta versions. I’ll try reinstalling b4 once the backup is restored and see how it fares.

Edit: Once the device got nuked, I installed Current OS, created my account back, installed 26b4 without issues, with full external display support. Now I am waiting for the time machine restoration.
 
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I still remember Greg Federighi saying how gorgeous it looks. I'm still trying to see it. This is the most controversial UI design move I have from Apple in the last 25 years. I wish I could turn this off or at least to be able to choose my own transparency setting.
 
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amaze1499 said:
I still remember Greg Federighi saying how gorgeous it looks. I'm still trying to see it. This is the most controversial UI design move I have from Apple in the last 25 years. I wish I could turn this off or at least to be able to choose my own transparency setting.
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Finder is a total **** show. Even in the above screenshot - what is that mess of a floating sidebar?!
 
I have installed it yesterday on M4 Pro MacBook Pro, as my main OS, after my macOS 15 got corrupted after trying to install the latest Dev beta of macOS 15, end up doing a fresh install, then upgraded to macOS 26, seams fine so far, the battery seams to hold up, when the MacBook is not hot, and I am using Safari TP, a Web App that I work on does not work properly with the version installed.
Will try it for a couple of days, if I am satisfied, I will just delete the Sequoia partition I created just in case.

When using Graphite as accent color, now color the close, minimize, expend button as expected now.
I use Dark Mode by default, light mode does not look good IMO as of now
 
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