Itsme, the only content that I filter out on purpose on en: and fr: is all kinds of self referential housekeeping messages like "This article needs more references" or "This article is a stub, you can make it better". No other filtering is intentional. I have not done even that yet on de:
I checked Koblenz and Ludwigshafen, clearly a parser error, some of the underlying table syntax is shown. Those tables are built with templates so if a template is not parsed well, it immediately means all occurrences of that template shows the same defect.
I will look into the missing cities when I start working on the image edition, but that won't be this month anyway.