Trunk,
Thanks for the extra info through PM. We were in the process of investigating this as you sent it
We have been able to recreate the issue that you both describe. The problem is due to the setting in the Social Configuration - Open Graph tab for "Use beginning text in article for default". Basically, it's picking up the {loadposition xxx} tag and using it for the description. It's not using the ending } in the description and instead leaving that in the article text.
Both things are obviously incorrect -- that's a terrible description if someone Like's the page and posts it to Facebook and the extra } is annoying.
For now, we can only recommend disabling the "Use beginning text.." setting. I've added a ticket to our bug tracker for this item, but honestly am not sure the best way to fix this immediately. Likely, we should be ignoring any {blah} tags, but that could cause other issues for users that actually want to put a { in their intro text.
Hope the above at least works as a temporary solution, and we'll try to get a better solution into an upcoming release.
Thanks,
Alex