Who contributed to Mobile platforms on August 24, 2026?

6 developers shipped this update, including mattkae, gaaclarke, Justin McCandless, DougGregor, hjyamauchi, and Andrii Rublov.

What were the notable Mobile platforms updates?

Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994), Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994) (#191498), and Fixes MSAA on the linux embedder.

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The Wire · Showcase

FLUTTER STUMBLES ON LINUX POPUPS AS SWIFT AND KOTLIN PUSH FORWARD

By RepoJournal · Filed 06:59 UTC on August 24, 2026 · About Mobile platforms

6 people shipped this

mattkae @mattkae 2 cited

gaaclarke @gaaclarke 2 cited

DougGregor @DougGregor 2 cited

Justin McCandless @justinmc 1 cited

Andrii Rublov @seclerp 1 cited

hjyamauchi @hjyamauchi

Flutter's Linux popup and tooltip positioning fix is back to square one, while Swift locks down move-only deinit crashers and Kotlin cleans house.

Flutter reverted its Linux popup and tooltip placement logic twice in the same period [1][2], leaving desktop UX in limbo and signaling the original fix wasn't ready for prime time. Meanwhile, the same team shipped a real win: MSAA is fixed on the Linux embedder with an explicit resolve step, mirroring the Windows path [3][4]. Error messages are also getting platform-neutral, dropping Material and Cupertino references from framework error strings [5]. Over in Swift, Doug Gregor is stamping out cross-module crashes by specializing deinits for move-only generic types in embedded Swift [6], and bridging all SILFunction thunk kinds to fix an open issue [7]. Kotlin put the final nail in an old workaround, removing the obsolete `DISABLE_IR_VISIBILITY_CHECKS` directive from kotlinx-serialization tests now that the underlying issue is resolved [8].

Action items

→ Watch for a new Linux popup/tooltip placement PR in Flutter; don't pin to the old reverted commit flutter/flutter [monitor]
→ Test MSAA on Linux embedder with the latest Flutter engine to confirm antialiasing is fixed flutter/flutter [plan]
→ Run a Swift nightly build to validate the move-only deinit specialization fix for embedded targets apple/swift [immediate]

References

[1] Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994) ↗ flutter/flutter
[2] Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994) (#191498) flutter/flutter
[3] Fixes MSAA on the linux embedder. ↗ flutter/flutter
[4] Fixes MSAA on the linux embedder. (#191379) flutter/flutter
[5] Remove Material/Cupertino references in error messages (#191305) flutter/flutter
[6] [Embedded] Ensure that we specialize deinits for move-only generic types ↗ apple/swift
[7] [Bridging] Bridge all of the SILFunction thunk kinds ↗ apple/swift
[8] [tests] Remove obsolete `DISABLE_IR_VISIBILITY_CHECKS` JetBrains/kotlin

Quick answers

What shipped in Mobile platforms on August 24, 2026?: Flutter's Linux popup and tooltip positioning fix is back to square one, while Swift locks down move-only deinit crashers and Kotlin cleans house. In total, 15 commits and 11 pull requests landed.
Who contributed to Mobile platforms on August 24, 2026?: 6 developers shipped this update, including mattkae, gaaclarke, Justin McCandless, DougGregor, hjyamauchi, and Andrii Rublov.
What were the notable Mobile platforms updates?: Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994), Revert "Improve initial size and placement logic for popups and toolt…ips on Linux (#189994) (#191498), and Fixes MSAA on the linux embedder.

Swift Kills PlatformKind::none, Flutter Rolls ICU

Swift's AST just deleted a footgun that has been a "common source of bugs" [ref:6], while Flutter quietly pulled in a new ICU revision [ref:3].

mobile 12 shipped

Mobile platforms Aug 22

SWIFT FIXES CRASH ON NON-COPYABLE EXISTENTIALS

A Swift compiler crash that hit local non-copyable existentials is patched, and the fix clears the way for broader adoption of move-only types.

mobile 116 shipped

Mobile platforms Aug 21

SWIFT GATES RUNTIME VARS, KOTLIN DROPS GRADLE 8.13

Swift's runtime now ignores safety-disabling environment variables in privileged processes, and JetBrains is cutting Kotlin's Gradle support at the knees.

mobile 155 shipped

Mobile platforms Aug 20

FLUTTER'S ACTIONS HANDLER IS BROKEN

A regression in Flutter's Actions.handler breaks intent lookup for every app, and the fix is already in review.

+10

mobile 167 shipped

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