Found this Project yesterday. Love the fact that is go and vue. Pretty much was i would have implemented. So i started to develop a small project i had in mind for finance tracking. Go my Sum workflow working and worked around some querks with the Subrecord creation.
However i have a field Total on the main record (calculated by button via a workflow) and i wanted to show it as Metric in big . So i created a metric Total on the main module with Filter recordID=${recordID} and Sum operator (its anyways only one) on the total field. In 2022.3.0 it was working fine. With 2022.3.3 i have to add the same metric twice and only the second one gets rendered.
I just tested it before finishing up for today and it seems to work.
As I can see it was fixed in a 2022.3.3 hotfix.
So you can try pulling the docker image (2022.3.3) to see if it was resolved.
now it works. the image is 3days old i downloaded yesterday and the version said 2022.3.3 not sure what went wrong there. but ok cool now it looks pretty