Thanks for the screenshots. That seems to be the first photographed case in the wild of what has been reported the only recently by @tkurth (I’ve moved it here).
The main question is how does this strange text with all the different links in every character comes into place?
It could be a strange merging artifact of edits on the same regions by multiple persons.
The citation formatting seems to work as expected because the “explosion” is what Paperpile does with citation links, it makes full citations out of them.
If this is a common artifact we may need to think about ways to recognize and fix them at the formatting step, but that’s not trivial.