False error toast "Couldn't update mention preference" appears when changing settings despite successful update

(#3499) Bug Confirmed mobile

Observed behaviour

An error toast stating "Couldn't update mention preference. Try again." is displayed immediately, even though the setting is successfully applied and persists even after restarting the app.

Reproduction steps

  1. ​Go to Settings > Notifications.
  2. Under Mention preference, toggle or select any option (e.g; Prefer no @mention).
  3. Observe the alert message displayed at the top of the screen and check the actual state of the setting.

Build information

Version 2026.10.100, Beta 2, Channel Beta, Build 591, Android 13 (arm64), Device Xiaomi 21061110AG, Locale en-US, Push fcm, Flutter 3.47.6, Dart 3.13.5

Platform

Android

Evidence

Details

Expected behaviour When a mention preference is changed, the app should save the setting and show a success confirmation (or silently apply it) without triggering a false error alert.
  1. Rex changed the status from Needs triage to Confirmed

3 comments

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Comment by Nerdalie
Can reproduce CR - Version 2026.10.100, Beta 2, Channel Beta, Build 2591, Android 16 (arm64), Device Google Pixel 9 Pro, Locale en-US, Push fcm, Flutter 3.47.6, Dart 3.13.5
Comment by Jacubb
Jacubb 1 vote
Can reproduce Version 2026.10.100, Beta 2, Channel Beta, Build 2590, Android 8.0.0 (arm64), Device Emui 8, Locale en-GB, Push unifiedpush, Flutter 3.47.6, Dart 3.13.5
Comment by ternera
terneraMod 1 vote
Can reproduce CR - Version 2026.10.100, Beta 2, Channel Beta, Build 84, iOS 27.0.1 (arm64), Device iPhone16,1, Locale en-US, Push apns, Flutter 3.47.6, Dart 3.13.5