I think I know what you’re seeing. Is it that the JSON for the bucket configuration says membase? If I recall correctly, we did that intentionally to not break compatibility from Membase -> Couchbase. However, we started describing additional features in a separate part of the JSON. You should see a “bucketCapabilties” like so that describes Couchbase features.
“bucketCapabilities”:[
“cbhello”,
“touch”,
“couchapi”,
“cccp”,
“xdcrCheckpointing”,
“nodesExt”
]