The navigation arrows have disappeared from edited starting messages. I have lost access to hundreds of messages across multiple chats. Here is an example (I have redacted the content of my messages):

Notes:
– I have ChatGPT Plus.
– The issue did not exist on 4 August. I did not use ChatGPT again until earlier today, when I noticed the issue. I believe it may have been introduced with the addition of ChatGPT 5.6 Instant.
– The navigation arrows are present on every message other than the starting one.
– The navigation arrows are present on every message, including the starting one, in temporary chats.
– The navigation arrows are present on every message, including the starting one, on a free account that I have access to.
– The issue is present everywhere: Desktop, Web, all browsers, after clearing the cache, and in private/incognito windows.

Please fix this bug.