Thread Creation in Forum Channels with Webhooks

[Ceddix]

Description

If you create a new thread in a forum channel with a webhook (i.e. send a message and pass the thread_name argument) then sometimes the webhook message is not the original thread message, but simply the first message.

This means that the thread looks as if the first message had been deleted, see the screenshot below.

Steps to Reproduce

1. Create a webhook that sends a message to a forum channel and provide a thread_name.
2. Trigger the webhook.
3. Look.

Expected Behavior

The message should always be the original post message.

Current Behavior

It is not, apparently the "Original message was deleted".

Screenshots/Videos

Client and System Information