Not so much a bug but an effect...
Probably not an issue, probably already known, and isn't a problem IMO. It is a case of me not seeing the Camelcase missing tiddler italics till after the fact and easily corrected by adding the "~". The wiki provides warning of the situation, but it produced interesting result that would leave the unsuspecting scratching their heads.
When Camelcase gets automatically invoked by words containing 2 uppercase letters, ie: "FactBook".
A tiddler caption (used to replace the Tiddler title in a ToC) containing such a unintentional Camlecase link like, "World FactBook", when indexed by list-links-draggable or lists, produces a link that looks singular but is composed of a link to the actual tiddler and the Camelcase link. IE, World FactBook (as a caption) became a a link to the ToC tiddler World Factbook (clicking on World) and a link to the missing tiddler FactBook (clicking on FactBook). The wiki provides a warning when its displayed World Factbook, but it didn't register in my mind and I was wondering why a link to a working ToC tiddler was taking me me to a missing tiddler that had only half the name.
The italics the wiki was providing is what clued me in on what I had done.
I was getting the same effect with some other ToC tiddlers, like using caption "OpPlan" (for tiddler titled Operation Plans) and the Camelcase link replaced the link to the actual tiddler.