Helm does not cache smart remote entries

When downloading the index.yaml from a virtual repository pointing to http://some/artifactory/helm-virtual, the entries will start with http://some/artifactory/api/helm/helm/virtual/... and will not get replaced in a smart remote repository unless the api/helm/virtual is added as the charts base url.  

reproduction:
2 instances. art_1 and art_2.
create the following repositories:

• in art_1: local, virtual
• in art_2: remote to art_1_virtual, virtual

deploy a chart to art_1_local.

download the index.yaml of art_2_virtual.

expected:
art_2virtual/index.yaml - URLs will have links starting with art_2_virtual/api/helm/virtual

actual:
art_2_virtual/index.yaml - URLs are links starting with art_1_virtual/api/helm/virtual

Workaround
set the charts base URL with the api/helm/repoKey