User blog comment:DaNASCAT/Technical Update: February 1, 2016/@comment-1764483-20160202215615

Finally, thank God!
 * "A long-standing issue that caused some pages to temporarily show blank content was identified and fixed late last week."
 * "Interwiki links no longer convert characters like ':' and '/' into ugly encoded versions (such as '%3A'). Prettier URLs abound!"