When the title of post is long and it should wrap down, here's how it looks like in the Composer:
https://monosnap.com/file/IeABlg3WIIQZLQEXr1zO2K7lIImwV1
It looks like it was cut off, try to click on it and you'll see the entire line, that should how it looks like, right?
Also, the post that you see in the screen capture is a Link quick post. Why does it use the default editor when I edit it?
Thanks,
Jackson