When the edit summary contains both RTL and LTR it breaks. Se for example https://www.wikidata.org/w/index.php?title=Q3013215&curid=2880827&diff=292663898&oldid=250877025 where it becomes
(Page moved from [fawiki:ملت شاد (ایس آو بیس)] to [fawiki:ملت شاد (ترانه)])
The parenthesis are wrong (but they are correctly showed in the site links). The problem was discovered through the watchlist on Wikipedia.