The telephone game is used to demonstrate that humans and chimpanzees are indeed related.

For some reason, the link in the post I've just made appears twice: under the title (red on the screenshot), and as a link preview above the post body (blue on screenshot). All other post only have the link under the title, but no preview.

Most other posts look totally different and have the link only appear once under the title (for example, this one: https://lemmy.world/post/14822763).

How do I fix this? Because I couldn't find any "hide the link preview" button in the post editor?

Scientists have identified a new hybrid brain cell, sharing attributes of neurons and astrocytes. These cells can release neurotransmitters and may influence conditions like epilepsy and memory consolidation.