When looking at this Wikisource page https://de.wikisource.org/wiki/Seite:Versuch_%C3%BCber_die_wahre_Art_das_Clavier_zu_spielen_Teil_1_1759.pdf/91 i wonder why there is a line break after the last but one line ending with the words "vorgenommen werden müssen. Bey". Usually such line breaks do only appear after an empty line in the wikitext which is not the case here. Interestingly, this does not happen when the page is included in an article https://de.wikisource.org/wiki/Versuch_%C3%BCber_die_wahre_Art_das_Clavier_zu_spielen/T1H2A4_Doppelschlag.
This behavior is new and not correct. Should be fixed.