Unable to delete "started a thread" message on mobile

Reproduction steps

Enter a text channel
Tap the top right button for Threads
Tap + Create thread
Name it whatever, add a message, and Create thread
Swipe left to right to go back to the text channel
Long press on the message that says "<you> started a thread: <title>"
Notice there is no delete button
Right click the same message on desktop/web

Expected behaviour

If I can delete something on desktop, I should be able to delete it on mobile.

Actual behaviour

Mobile can't delete this message, but desktop can.

Build information

Version 2026.10.100, Beta 16, Channel Beta, Build 2875, Android 16 (arm64), Device Google Pixel 9a, Locale en-US, Push fcm, Flutter 3.47.9, Dart 3.13.7

Platform

Android, iOS