{"id":51629,"date":"2026-04-17T14:57:20","date_gmt":"2026-04-17T18:57:20","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=51629"},"modified":"2026-04-17T14:57:20","modified_gmt":"2026-04-17T18:57:20","slug":"xcode-26-4-1","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2026\/04\/17\/xcode-26-4-1\/","title":{"rendered":"Xcode 26.4.1"},"content":{"rendered":"

Apple<\/a> (xip<\/a>, downloads<\/a>):<\/p>\n

\n

Fixed crash for MetricKit apps built with Xcode 26.4 due to missing symbols when running on iOS, macOS, and visionOS versions below 26.4.<\/p>\n

[…]<\/p>\n

Fixed stack-allocation bugs in async functions that caused “freed pointer was not the last allocation” crashes, particularly in swift_asyncLet_finish<\/code>. These long-standing issues became more frequent in Swift 6.2 and 6.3 due to optimizer improvements.<\/p>\n<\/blockquote>\n\n

Nic Lake<\/a>:<\/p>\n

\n

I’m currently learning SwiftUI.<\/p>\n

26.4 preview windows don’t let you scroll or swipe. Crashes & requires an Xcode restart.<\/p>\n

Seems like this kind of stuff is, if not the norm, then at least common enough where the general response is “welcome to iOS development, here’s a cookie”.<\/p>\n<\/blockquote>\n\n

Christian Beer<\/a>:<\/p>\n

\n

Xcode loses my Apple Accounts again and again!! WTF? It also happens on the CI server… SO annoying!<\/p>\n

And it doesn’t even has a Passwords.app integration!! 🤬<\/p>\n<\/blockquote>\n\n

Isaiah Carew<\/a>:<\/p>\n

\n

notarization failing today because of new Paid App terms. i don’t have any paid apps but still have to agree to get notarization working.<\/p>\n

took me 90min to sign in. dev ID was “Locked for Security Reasons” — it always is.<\/p>\n

unlock fails in Chrome, “The action could not be completed”. in safari the captcha doesn’t show.<\/p>\n

but unlock works on my phone.<\/p>\n

the it says, “Reset your password?” but it didn’t. it just unlocked the account — the text in the alert was just wrong.<\/p>\n<\/blockquote>\n\n

Heath Borders<\/a>:<\/p>\n

\n

Every month or so, I have to open Xcode, and every time I’m surprised at how it can’t do basic things.\nXcode can’t find a call hierarchy for a local function declaration. It just beeps at me.<\/p>\n<\/blockquote>\n\n

It’s been 10 years or so since Jump to Definition<\/strong> and Jump to Next Counterpart<\/strong> worked consistently for me. Often, I just get beeps or nothing happens.<\/p>\n\n

Previously:<\/p>\n