I recently noted that on RTL Wikipedia (such as Persian Wikipedia and Arabic Wikipedia), the "duration" message for block log entries is rotated and the order of words is not correct.
Behzad.Modares (بحث | مشارکتها | بسته شود) «22.214.171.124 (بحث)» را ۱ روز بست
However, instead of reading as "1 days" (in Persian) it is read as "days 1". This is because in the HTML code, the duration is surrounded by an HTML tag:
<span class="blockExpiry" dir="ltr" title="1 day">
Which has the dir value hardcoded. This breaks RTL layout and should be reverted. Such modifications should always take place at CSS level.