New string up for translation in WordPress 4.5.3

Due to a seeming mistake WP 4.5.3 introduced a new stringString A string is a translatable part of the software. A translation consists of a multitude of localized strings. up for translation:
https://translate.wordpress.org/projects/wp/dev/admin/pl/default?filters[status]=either&filters[original_id]=2998716&filters[translation_id]=43663861
(if using this URLURL A specific web address of a website or web page on the Internet, such as a website’s URL www.wordpress.org, change “pl” to your language; otherwise find the string in the directory: 4.5.x / Administration)

This new string is exactly the same as the one already existing in previous and current WP versions ( https://translate.wordpress.org/projects/wp/dev/admin/pl/default?filters[status]=either&filters[original_id]=27222&filters[translation_id]=1259303 ) – only the %1$s was mistakenly typed in by someone as %s, so a new string was generated. The %2$s was left unchanged,.

You can translate this extra string. It should remove itself with the next WP version (assuming someone changes back %s to %1$s).