https://ru.wikipedia.org/w/index.php?title=%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%8F:%D0%A4%D0%BE%D1%80%D1%83%D0%BC/%D0%9D%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8/Flow
When I right-click "Edit description" and choose "open in new tab"
text "By saving changes..." appears not fully
+visual editor opens with gray background
and in wikitext added nowiki nowiki tags