hyperqueue: Multiple workers-per-allocation not working

So from what I understood --workers-per-alloc <worker_count> is used to run multiple workers on multiple nodes, but it doesn’t seem to behave that way. For example if I want to run 5 calculations on one node, I use an automatic allocation with 1 worker per allocation which then launches 5 jobs (1 task per job) on 1 node. So this is working as expected. Now if I launch an allocation with 2 workers per allocation, I was expecting that my 10 calculations would run on 2 nodes, with each node having its own worker. But what happens is that 2 workers occupy 2 nodes, but any of the 10 calculations does not launch stating the following error -

srun: Job 748536 step creation temporarily disabled, retrying (Requested nodes are busy)

Please note that the nodes are not in fact busy as there is one ‘big’ Slurm job running on these 2 nodes. But there is no process running on either nodes if I check with top or htop.

I may be completely misunderstanding the purpose of this --workers-per-alloc <worker_count> command. In which case, would it be possible to do what I am trying to do in some other way? Or is it a use case that is not planned to be supported?