Auto Publicise truncates posts

New install of Auto Publicise using Jetpack. First published post went fine, shared to Facebook efficiently but the post is truncated and has [ 32 more words ] appended to it

There’s no information in Publicise to suggest that this is the way it is meant to work, and indeed aI can’t see any logic to it

Is there a limit to the number of words that can be posted? Is that limit changeable? Is it documented anywhere?

Because it’s a massive waste of time to setup this feature and then find it doesn’t work as advertised