I just noticed that quotes were being stored to the ubbt_TOPICS/TOPIC_SUBJECT table as markup ("&
quot;") rather than absolutes. This is fine in most places throughout UBBT, but in this one location, it's not producing the identical URL we're looking for. It creates a new link for identical content, ie; raising "duplicate content" flags for "dumb" spiders/crawlers.
I've updated the OP by adding a new line to convert those quote markups.
Sometime in the future, I'll look in to why
the "Link to this individual post" link (the post-icon at the top-left of each post/reply) is pulling from ubbt_TOPICS/TOPIC_SUBJECT rather than ubbt_POSTS/POST_SUBJECT -- and also why markup is being stored in the ubbt_TOPICS/TOPIC_SUBJECT table rather than absolute characters. It may just be something moving forward to a future feature "SD"
mentioned on 05/10/2014, relating to getting away from being able to change the topic mid-discussion... or it may just be a UBBT bug?
EDIT: The post link pulls from ubbt_TOPICS/TOPIC_SUBJECT rather than ubbt_POSTS/POST_SUBJECT as to avoid creating new URLs for the same page content.