When viewing a page like [[ar:عمان (مدينة)]] (ending in a bracket, a neutral character) with an LTR langauge chosen as the interface language, the final character of the title is displayed to the right of the word, as if it is at the start, when it should obviously be displayed at the left (at the end). It displays correctly if the interface language is RTL.
This bug seems to have started when a recent interface change was made, when the layout started to depend on the selected interface language rather than the language of the wiki.
Basically, before a recent change, the layout of RTL wikis was always the same no matter what the interface language was, and was a mirror of the interface on LTR wikis. Recently, that was changed, so that the menu is on the left side if you select an LTR interface language. For some reason, this also changed the side the title is displayed on, and also introduced this bug.
As this bug also appears on he.wiki ([[he:מכבי תל אביב (כדורגל)]]), I’d guess this is a general bug on RTL wikis, rather than one specific wiki.
I’ve confirmed that this bug occurs on both Chrome and Firefox, and on both vector and monobook skins.