As I said in my post, the rust coreutils team HAS fixed this in 0.11. It's just that Ubuntu 26.04 is stuck on the older one.
Shipping a coreutils that is version 0.8 in an LTS release seems like an interesting choice.
But I guess that shows another weakness of Ubuntu's model of versioning. You can't fix a bug if they don't merge. They have their own bugtracker (and so does every distro?) so you, Mr Dev have to deal with angry users not only on your Github Issues page, but on every distro's own bugtracker as well, and will have to perpetually support whatever old version they decided to shit (times X distro).
Does that mean BTW that they'll keep shipping the same broken dd for the next 2(4) years?