Is the original source this page: http://www.legacy.com/obituaries/capitalgazette/obituary.aspx?n=katherine-addison-johnson&pid=137012220 ?
If so, there is nothing in it’s source code that would cause this. So very odd….
Before upgrading your Royals site, try looking at the problem where it exists now in different themes. If that changes it, then there is probably an issue with colors theme. If it doesn’t, then it’s probably not being caused by kiwitrees at all, and therefore unlikely to appear on your other site even after an upgrade.