I own various versions of Eusebius' Church History in Logos / Verbum.
Today, I first noticed this on Android, but it is the same on Desktop: Eusebius' Ecclesiastical History in
https://www.logos.com/product/27474/nicene-and-post-nicene-fathers-21-eusebius-church-history-life-of-constantine-the-great-and-oration-in-praise-of-constantine
isn't linked to the Greek text:
Whereas the German translation is linked with the Greek text, but not with the English one:
