For some reason, only half of the text in one of my posts is being displayed, here: 1/2 a post. 4th post down. I've edited twice but still no luck.
Any reason why it should do this?

Aha I see you mean on Post #4 , well not sure what is it, but no worries...it will be fixed...

as our admin wrote here,
its a bug and admins are working on the issue