Recent Comments

Open Radar FB8959397: NSTableViewDiffableDataSource causes a strong retain cycle

"Potential fix identified - For a future OS update"

By AlexanderMomchilov at April 21, 2021, 2:31 a.m.

Open Radar FB9053529: WCSession failing on user's devices. With and without errors.

No news from Apple. Apple is aware of a total of affected 7 users now.

By mss.geoteach at April 20, 2021, 7:44 a.m.

Open Radar 7251207: Failure to read the Keychain on iOS 13 Simulator

Re-tested on Xcode 11.4

iOS 13.5 Simulator (iPhone 11 Pro) - works. iOS 12.1 Simulator (iPhone SE 1st gen) - works.

By serieuxchat at April 13, 2021, 7:37 a.m.

Open Radar FB8990109: Xcode under Rosetta fails to run unit tests without host application and UI tests

This problem appearing only when I start UITests, but UnitTests work fine...

How do you provide access to Example app classes if you: - Remove following line from the generated unit test "@testable import Example"

By subach.pavel at April 12, 2021, 10:52 a.m.

Open Radar FB8969539: Xcode is unable to Archive a project with Preview Content

@Thomas.DDelgado - I thought of a workaround that doesn't use #if DEBUG and answered the question on StackOverflow: https://stackoverflow.com/questions/63078880/why-does-archive-fail-if-there-is-code-for-swiftui-previews-in-the-preview-conte

By jeremy.gale at April 8, 2021, 3:11 p.m.

Open Radar FB9053529: WCSession failing on user's devices. With and without errors.

Status April 8 2021

Apple has responded fairly quickly, asking me to provide device logs when this issue occurs. As it does not happen on my own devices, I am asking my users for their permission to share their email with Apple so they can get in touch with them to investigate.

(Of course I could try to make the users gather the logs myself but it wouldn't make sense to have a conversations with 3 nodes in series when I'd merely forward emails back and forth between the user and Apple instead of them talking directly to each other)

On April 4 I have provided them with the first contact and haven't heard back from Apple yet. Today another user gave their permission so Apple is now aware of 2 users with affected devices.

I will keep this issue updated.

By mss.geoteach at April 7, 2021, 10:48 p.m.

Open Radar FB8107202: Unable to reorder schemes in a workspace using scheme management sheet

Still present in Xcode 12.4 (12D4E)

Also seeing this in the latest Xcode

Open Radar FB8884688: White line appears at top of screen in full screen mode

iterm2 Build 3.4.4, Big Sur 11.2.3 (20D91) The problem still happens, and very annoying. I can't imagine Apple allows this bug to exist for such a long time. It doesn't help your users to have confidence in Apple product's quality.

By sapience at April 1, 2021, 8:01 a.m.

Open Radar FB9044916: Server error 500 when uploading screenshots

This issue was resolved roughly 18 hours after I first noticed it. Apple responded to my open radar yesterday (7 days after the report) asking for more information, but I told them the issue was resolved already.

By rogerluan.oba at March 23, 2021, 4:54 p.m.

Open Radar 8957219: `cp -p` doesn't correctly copy mtime

This was fixed at some point.

Not reproducible in 11.3.

Open Radar FB9046063: softwareupdate --download --all attempts to reboot machine in certain conditions (Big Sur)

How to replicate

  1. Spin up a VM running 11.0 -> 11.2.2
  2. Install https://support.apple.com/kb/DL2020?viewlocale=en_US&locale=en_US
  3. Open Terminal and run softwareupdate --list and confirm you have a Pro Video Format update and Big Sur update available
  4. Open another terminal window and run man softwareupdate
  5. Open Safari
  6. Run softwareupdate --download --all

Once softwareupdate has finished downloading the updates, safari will be closed but your vi session has prevented the force reboot

You can re-open Safari and rerun softwareupdate --download --all to reliably recreate the attempted force reboot


If you would like to see the forced reboot, skip step 4

By eriknicolasgomez at March 17, 2021, 6:03 p.m.

Open Radar FB9020453: FileVault - Initial encryption slow - Wishing for option to speed this up

UPDATE comment from submitter to Apple

1) On-the-fly encryption of received files is a magnitude faster than awaiting initial data-on-disk encryption!

2) Not only on bootable volumes, but also when choosing "Encrypt" after right-clicking an externally mounted APFS volume.

Tested a TOSHIBA DT01ACA300 3.5" SATA HDD connected via a Delock USB-C DiskStation (Item No. 64090, USB 3.2 Gen 1).

Again the data-on-disk initial encryption was only at a crippling slow 7-8 MB/sec write speed, far below what's possible I/O and CPU wise. The same HDD in both Finder and BlackMagicSpeedTest consistently achieved:

~ 170 MB/s seq. write to APFS unencrypted.

~105 MB/s seq. write to APFS encrypted.

As I still had the data source (a SD Card with up to 90 MB/s for reading sequential data) I wanted to shorten my wait time. Hence I aborted the initial encryption progress on the HDD, reformatted right to APFS encrypted, and then copied to it from the SD card at an average of 70 MB/s over the lifespan of copying 490 GB of data in files of various sizes. On-the-fly encryption was 10 times faster than had I awaited the data-on-disk encryption!

And with a different source it could even be faster, as further tests showed. I do not understand why encryption on/to the very same 3.5" SATA HDD differs:

~ 105 MB/s when receiving files from the internal SSD whose read maximum is far above that it could ever be the bottleneck.

~ 70 MB/s when receiving mixed-filesize-data from a SD card, whose maximum for sequential read I measured at ca. 90 MB/s.

~ 7 MB/s when performing encryption of on-disk-data. Why so much slower than on-the-fly encryption?

Open Radar FB8884688: White line appears at top of screen in full screen mode

This bug still exists, Hope this is being fixed. In the meanwhile, is there anything that App owners can do as a workaround fix for this?

By manideep.bvs at March 8, 2021, 3:40 a.m.

Open Radar FB8884688: White line appears at top of screen in full screen mode

As of today this bug still exists, quite annoying to be honest.

Open Radar 44748748: Expose ARKit sensor replay functionality in the public API for development purposes

Useful for production

For us, this would be a great feature for our customers in production. We build apps that let users try on glasses, and ideally they would record a session while taking of their own glasses. Then we could replay the AR Session with different glasses, while the user can put their own glasses back on, to see properly.

Open Radar 42234720: Trait Collection specialised IB properties can't be changed in traitCollectionDidChange:

Cannot migrate to named colors

still an issue in 2021 for xcode 11.4 and iOS 12.4

By michael.kropivka at Feb. 24, 2021, 8:40 a.m.

Open Radar 50553219: FileManager.url(for:in:appropriateFor:create:) Fails After 1000 Calls

Hi levigroker,

Is there a way I can programmatically list all the temporary folders created with .itemReplacementDirectory and remove them manually at any time? (For example when I find there are plenty of them not yet removed?)

By sergey.nesteruk at Feb. 18, 2021, 12:48 p.m.

Open Radar FB8960652: `touch` doesn't fill in nanoseconds for already-existing files

I noticed this too

Thanks, I thought it was just some inherent limitation but your python comment proves otherwise

Now if only we can get a tool to list and copy xattrs on iOS

By Syclone0044 at Feb. 16, 2021, 9:29 a.m.