Thank you for the bug report!
With the guest account on amdahl.debian.org I was able to track down
what I believe to be the cause of this issue.
I have modified the title of the bug report to describe the cause.
The fix is in the upstream repository, but still needs to be turned into
a merge request.
It is also applied as a patch to the moarvm debian package. Version
2024.09+dfsg-3 includes this patch and the source package has been
accepted into unstable about half an hour ago.
I expect that this fix is enough to get the transition to finish.
Kind Regards, - Timo
