Minecraft Username: 314

Brief Description: A post in a forum PM disappeared without a trace. I made it on Thursday, maybe already Wednesday. I am not exactly sure; but I know that I wrote the post for almost one hour and even checked it three times with F5 to make sure that it was actually sent. Until a new post appeared today it showed my profile picture on the forum PM, indicating that the last post was made by myself.

Instructions: Post in a forum PM. Check again a few days later. Fail to find your post.

How many times did you recreate this bug?: Once.

Result: My post disappeared.

Expected Result: I expected that my post would behave like any normal forum conversation message behaves and stay there for the other participants to see.

Evidence: N/A. A forum conversation with a post missing doesn't look special. .-.