Last modified: 2014-03-10 23:55:00 UTC
https://jv.wikipedia.org/w/index.php?title=Kraton_Ngayogyakarta_Hadiningrat&curid=87083&diff=879162&oldid=845799 This begins with a =Level 1 heading= (perhaps the article title was copied?). Some paragraphs are broken onto separate lines. The [[links]] are improperly converted to [[http://jv.wikipedia.org/wiki/Links]].
The H1 is just external copy of the read HTML (and isn't a bug, just bad user behaviour). The links getting badly converted are bug 58136. However, the paragraphs getting split is a new regression in Firefox pasting behaviour. :-(