Uploading a delta artifact fails if the full image is already uploaded

I created two Yocto builds.
I then upload the full image Mender artifacts.
I then create a binary-delta between version 1 and version 2 using the same artifact name as version 2.
When I try to upload the binary delta it is rejected with

When I try to upload the delta, I get "Artifact couldn't be uploaded. An artifact with the same name has conflicting depends: { : "warrior-target-image-2.0", : { device_type: "beaglebone-yocto-grub" } }... [Request ID: 1290695f]"

And if I upload them in the opposite order, it fails as well (on the second upload ie the full image).