It either hangs with a white screen, or does not open at all.
The problem concerns the version of Telegram 5.0.8 for iOS , released on September 28. Representatives of the service confirmed the presence of problems and suggested that they could be related to migration of the client from the platform written in the Objective C programming language to Swift (both native for iOS).
Not sure if this is relevant. Had this been a Tuesday, a lot more people would’ve been hit by the bug (btw, automatic distribution is currently stopped — only the people who manually go app’s page on the store get the new version) (1/2)
— Telegram Messenger (@telegram) September 29, 2018
Telegram stopped the automatic updating of the client, and although you can manually upgrade to version 5.0.8, the company is advised not to do it yet.
In the update Telegram 5.0.8, the service developers changed the appearance of notifications inside the messenger (now they can be opened), changed the counter of unread messages (now it defaults to the number of unread chats, not messages), decreased battery consumption of the smartphone and accelerated synchronization of chats those that are unmemorized synchronize faster than the mute ones). In addition, the chats changed the animation when navigating.