Browse by Subject is showing authority keys

[euler]

Hi,

I am using DSpace 6.3 Mirage2 theme. After searching for a solution for this issue, I found out that most users were experiencing this with authors and not with other browse indices. I don't have this issue with authors because as per documentation here: https://wiki.lyrasis.org/display/DSDOC6x/ORCID+Integration#ORCIDIntegration-Configuration, you need to set webui.browse.index.2 = author:metadataAuthority:dc.contributor.author:authority. However, I am having issues with authority controlled subject fields. It is showing the authority keys instead of labels. Below is my configuration:

webui.browse.index.4 = subject:metadataAuthority:dc.subject.lcsh:authority

I have another repository that uses the same configuration but don't have this issue. The only difference is that the repository that don't have this issue is getting its authority keys from a controlled vocabulary in [dspace]/config/controlled-vocabularies while this one got its authority keys from a web service API.

Any advice? Please note that I also combine the abovementioned config with discovery.browse.authority.ignore-prefered.subject = false or discovery.browse.authority.ignore-prefered.subject = true but it doesn't solve the issue. Please also note that I did the usual index discovery -b after every change.

Thanks in advance.

euler