So, I have had this issue with the forums for years, across multiple browsers, and multiple computers. I have brought it up before, but it is still around.
What causes it? I can be browsing the forums, go to comment on a post, and BOOM brought to the login screen as I hit submit, losing my entire post.
I could be browsing and mid browse I am logged out.
Really, I just get logged out at the most random times. Sometimes multiple times in a row.