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macOS Tahoe 26.0 RC - 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.
I was looking forward to setting custom folder icons, and seeing those when adding the folder to the Finder sidebar or to the dock (when selecting "Display as: Folder"). However, in both of those places I see only the generic folder icon. Is that expected behaviour, or a bug?
 
oMc said:
RC is running just fine on my M1 MBA, just a bit surprised that they haven't changed the icon for the removable USB storage yet.

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Reminds me of how OS X Yosemite shipped with a beach ball cursor that was still the old Aqua glossy one. Took a whole OS release a year later to get addressed. In this case it’s a more glaring omission though.
 
Still dealing with the contrast bug after waking up from sleep after a while. Anyone else?

Quick look also keeps breaking and I have to completely force quit finder. Really not impressed this year with the betas. My iPhone 16 PM also overheats. Usually betas are completely fine for me but not this year.
 
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nnauq said:
I was looking forward to setting custom folder icons, and seeing those when adding the folder to the Finder sidebar or to the dock (when selecting "Display as: Folder"). However, in both of those places I see only the generic folder icon. Is that expected behaviour, or a bug?
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system settings>appearance>folder color. should show if you then move that folder to the dock (or reboot, or restart the dock)... if it doesn't immediately.

sidebar in finder windows continues to show the black-&-white icons
 
Don't remember this on earlier builds, but in System Settings > Desktop & Dock > Widgets area, instead of having ability to select monochromatic, it now has the option to "dim widgets on desktop."
 
Macbook Air M1: The RC for me is not locking the screen with hot corner, keyboard button, or external wireless keyboard.
Anyone had the same issue?
 
darkcompass said:
Macbook Air M1: The RC for me is not locking the screen with hot corner, keyboard button, or external wireless keyboard.
Anyone had the same issue?
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Not a bug, just me. I fully powered down and back up and it seems to be working now. Serves me right in jumping the gun with this RC :D
 
If I were so impatient that I didn't want to wait until Monday, do you think that the release version will be just a small update compared to the RC or will I need to download something like 10GB of data all over again (and wait for a long installation time)?
For those who have updated at each beta release: are they all about the same in size or are they incremental updates?
 
JoeSilver said:
If I were so impatient that I didn't want to wait until Monday, do you think that the release version will be just a small update compared to the RC or will I need to download something like 10GB of data all over again (and wait for a long installation time)?
For those who have updated at each beta release: are they all about the same in size or are they incremental updates?
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GMs tend to be a full in-place installation. Although I’ve seen cases where people are unable to get rid of the beta channel updates afterward which means you’re quickly going forward with the .1 beta cycle, etc.

Personally I’d just do a clean install. As I do with every major new version. That said I never run betas as my primary startup volume.
 
n-evo said:
GMs tend to be a full in-place installation. Although I’ve seen cases where people are unable to get rid of the beta channel updates afterward which means you’re quickly going forward with the .1 beta cycle, etc.

Personally I’d just do a clean install. As I do with every major new version.
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oh, do I need to do anything in particular for a clean install?

EDIT:
wait, if it means wiping the disk and installing all over again, no, I'm going to risk the update. :)
After all, it's what I've been doing for years every 6 months with Fedora.
True that, I know how I can handle glitches and clean up leftover files from Fedora post upgrade, while I'm quite new with Mac OS. But I have no appetite for a full installation, reconfiguration, copying over all the backup data (I will backup, but as a safety measure), reinstalling the third party software (I'm uninstalling some big and not much used packages anyway).
 
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JoeSilver said:
If I were so impatient that I didn't want to wait until Monday, do you think that the release version will be just a small update compared to the RC or will I need to download something like 10GB of data all over again (and wait for a long installation time)?
For those who have updated at each beta release: are they all about the same in size or are they incremental updates?
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There is a chance that the RC build *IS* the final build, so there will actually be nothing to download on Monday if you are already on the RC build. ...Apple's track record with this is a mixed bag. Sometimes they take the RC build as final, sometimes they feel the need to tweak something and push out an updated build for final.

If they do push out a new build for final, you won't receive it as an incremental update if you are on the RC, it will be the big multi-gigabyte download. Other than that, if you install it through the Software Update part of the Settings app (i.e. rather than downloading the full installer separately), it will install like any other typical software update, similar to what you'd experience when going (for example) from Sequoia 15.5 to 15.6.
 
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PotentPeas said:
There is a chance that the RC build *IS* the final build, so there will actually be nothing to download on Monday if you are already on the RC build. ...Apple's track record with this is a mixed bag. Sometimes they take the RC build as final, sometimes they feel the need to tweak something and push out an updated build for final.

If they do push out a new build for final, you won't receive it as an incremental update if you are on the RC, it will be the big multi-gigabyte download.
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Got it.
I will wait until Monday. I hope I have time to play with it before going on holiday on Wednesday :D
PotentPeas said:
Other than that, if you install it through the Software Update part of the Settings app (i.e. rather than downloading the full installer separately), it will install like any other typical software update, similar to what you'd experience when going (for example) from Sequoia 15.5 to 15.6.
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Wait, you mean going from RC to Final Release via Software Update would be roughly the same as going from 15.5 to 15.6? Right?
 
JoeSilver said:
Wait, you mean going from RC to Final Release via Software Update would be roughly the same as going from 15.5 to 15.6? Right?
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Here I'm just talking about the upgrade experience. The amount of data that will be downloaded, the amount of time that it will take, and what you will see happening. Going from RC to final should be similar to any other macOS update in all of these respects.

Actually going from current Sequoia to Tahoe final will also be very similar to this as well, you'll just likely have a few OOBE splash/wizard screens to get through on the first boot after the upgrade.
 
Hi all. Soundcheck on Apple Music not working for me. I know it was always a hit and miss but now it seems to be completely broken? Anyone else or just me?
 
fisherking said:
system settings>appearance>folder color. should show if you then move that folder to the dock (or reboot, or restart the dock)... if it doesn't immediately.

sidebar in finder windows continues to show the black-&-white icons
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Not what I meant... That's the global folder colour (also very nice, and shows in the Dock), but I meant a custom icon and color per individual folder. Strange how they added that feature, even from a pre-set list of icons that look like they could fit right in the Finder sidebar, but not have them show up either there or in the dock.
 
nnauq said:
Not what I meant... That's the global folder colour (also very nice, and shows in the Dock), but I meant a custom icon and color per individual folder. Strange how they added that feature, even from a pre-set list of icons that look like they could fit right in the Finder sidebar, but not have them show up either there or in the dock.
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if i add a custom icon to a folder (i just tried it), and drag that folder to the dock, the icon shows there. is this not working for you?

the Finder sidebar doesn't of course do this...
 
fisherking said:
if i add a custom icon to a folder (i just tried it), and drag that folder to the dock, the icon shows there. is this not working for you?

the Finder sidebar doesn't of course do this...
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Nope! If it's working for you, I hope it's a bug and will sort itself out.

SCR-20250912-oshe.png
 
The RC version as well as the previous beta has messed up ability to pan/zoom the Apple Studio Display webcam. Center stage works (and will pan/zoom as needed), but if you turn it off, you cannot manually pan/zoom.
 
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