- CAVX
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- Exalted Legendary Member
Not a glitch. In this environment, threads don't technically have titles, posts do.
The title shown atop the page you're on is the title of the first post on that page.
The title shown in the forum listing is the title of the OP.
When you reply to a post, your post takes the same title as the post you're replying to. So if the OP changes the title of the thread's first post, that can lead to different page titles depending on who people are replying to.