Europe’s push for digital sovereignty just collided with open-source orthodoxy. The Free Software Foundation delivered a stark warning to OnlyOffice this week. You can’t bolt extra restrictions onto the GNU AGPLv3 to handcuff forks. The dispute traces back to Euro-Office, a Microsoft Office rival forked from OnlyOffice by Nextcloud and IONOS. OnlyOffice cried foul over removed branding. Now the FSF has weighed in, siding decisively with the fork. Picture this. Nextcloud and IONOS announce Euro-Office on March 27, 2026—a sovereign suite for EU institutions wary of Big Tech lock-in. They base it on OnlyOffice’s AGPLv3 code. Days later, OnlyOffice suspends its Nextcloud partnership, accusing the project of stripping required logos and attributions ( Slashdot ). OnlyOffice CEO Lev Bannov didn’t mince words in a March 30 blog post .…