In D5686#144406, @ardumont wrote:

first diff, achievement unlocked, w00t ;)

is stupid one though :)

first diff, achievement unlocked, w00t ;)

is stupid one though :)

yeah but your tooling is ready for more complex stuff now ;)

@jayeshv don't forget to push it.

Also if it's been pushed already, you can just close the diff.

tl; dr If you do some rebase after opening a diff, you need to synchronize back the diff with the new commit (arc diff --update DXYZ)
Otherwise, the diff stays open ad vitam.