@Markus Pettersen I checked from my end(Cluster:api) and I was not able to reproduce the issue. However I get the same 429 errors in the developer console but the lineage works. Since this project is in a different cluster, can you please check the network tab in the Developer tools and let me know if you can see any errors and share the request-ids if available?
I looked in the network section and saw no errors appear. I am also only able to reproduce the error for the one dataset, WIMS. But I am able to reproduce it for the same dataset in all of our CDF projects.