This is a known issue that's being addressed. It occurs when there aren't enough chats in the main list, so the "pull down" gesture snaps back.
While it's being fixed, you can either search for the chats directly, or unarchive/add a few new chats to your main list to fill it out— Telegram Messenger (@telegram) October 18, 2019
#telegram
While it's being fixed, you can either search for the chats directly, or unarchive/add a few new chats to your main list to fill it out— Telegram Messenger (@telegram) October 18, 2019
#telegram