I am struggling with this issue as well.
curl -k https://[ip-of-container]:9980/hosting/capabilities
{"convert-to":{"available":true},"hasMobileSupport":true,"hasTemplateSaveAs":true,"productName":"Collabora Online Development Edition"}
curl -k https://office.[publicdomain]/hosting/capabilities
{"convert-to":{"available":false},"hasMobileSupport":true,"hasTemplateSaveAs":true,"productName":"Collabora Online Development Edition"}
No relevant entries in Apache or container logs. CODE admin panel is accessible, opening documents in NextCloud fails with a nondescipt error message. VHost configuration is adapted from current documentation. I am at my wits’ end.Has anyone any pointers as to what I could do or enable to aid in debugging?