In Exp. Mgr., wrong endpoint parameter value set on SPA request

In org.hippoecm.hst.container.HstDelegateeFilterBean#includePmaCallbackURL there's logic to add the 'endpoint' parameter to the SPA location as configured by 'org.hippoecm.hst.configuration.channel.PreviewURLChannelInfo_url'.

In case the CMS runs on a different domain then the site, the value is <cms>/resourceapi rather then <site>/resourceapi

Local reproduction:

• start the demo at brxm/community/spa-sdk/examples/xm
• rename /hst:platform/hst:hosts/dev-localhost/localhost to 127.0.0.1
• access the CMS at http://127.0.0.1:8080/cms/ and open the channel

--> Inspect the URL that is constructed, in browser or when debugging.

Analysis
The logic uses HstRequestUtils#createURLForMountPath which uses HstRequestUtils.getFarthestRequestHost(request, false) which returns the 127.0.0.1 URL, then "/resourceapi" is added

Consequences?
I don't know what the consequence of this is. How is the SPA SDK using that parameter?