Editing an earlier prompt after refreshing the page sends it as a new message at the bottom instead

Has anyone else started seeing this?

Since yesterday (October 8), I've been getting a strange bug with editing prompts on ChatGPT Web.

Normally, if I edit an earlier message, ChatGPT branches/restarts the conversation from that message. But after refreshing the page, editing an earlier prompt instead sends the edited prompt as a completely new message at the bottom of the conversation.

I've done some testing and managed to narrow down the trigger pretty well:

- Start a new conversation and edit an earlier prompt without refreshing: works normally

- Leave the conversation open for 20+ minutes and then edit: works normally

- Switch to another conversation, come back, and edit: works normally

- Refresh the page, then edit an earlier prompt: bug occurs

So it doesn't seem to be caused by the age of the conversation, inactivity, or switching between chats. A full page refresh seems to be what triggers it.

Once the page has been refreshed, ChatGPT apparently still lets me click Edit on an earlier message, but when I submit the edit, it gets appended to the end of the current conversation instead of creating a new version/branch from that point.

I'm using ChatGPT on desktop/web in Chrome on Windows.

Has anyone else been able to reproduce this specifically after refreshing a conversation?

Also, yes, I've tried clearing the cache, turning off extensions, and going into incognito mode. And it's the same on other web browsers.