Telegram on iOS crashes when browsing stickers or gifs longer than 30 second
If you open the sticker/gif panel when entering a message, flip, twist, rotate, no matter how, but view them, 15-20 seconds - the application crashes. Steps to reproduce Entering a message; Click on the…
As this will need to reveal the planned message to every client before the planned time has reached. So you could implement a malicious client to read the messages before they are supposed to be revealed. This could be a security issue in certain use cases!
But, this would move the send logic for scheduled messages to the telegram servers.
Clients always are to be treated as hostile.