Post Series Block Renders Twice

[AJB99]

Hi there,

Trying out your plugin, but I'm running into an issue where the Post Series Block is prepended to my post twice at the top and twice at the bottom.

And it's worth noting that the first block in both pairs doesn't display the list of posts, even when expanded.

Any idea why this is happening?

Also, are there any settings I can use to force the block to render already expanded?