This is from Signal.

Alt: A dark-grey app update notification displays "What's New" in a larger font size. Below, it states "January 15, 2025 · 7.38.0". The main text explains that a bug with "[@]" mentions that sometimes incorrectly included the user's own account in autocomplete suggestions has been fixed. It humorously suggests using third-person narration as a workaround in group chats if the user misses the bug. A blue "X" is shown in the upper right corner to close the notification.

Provided by @altbot, generated using Gemini