Got 'https://', expected ... 'https://' error when connecting to remote database

I've just upgraded Desktop v1.5.2 and now get a most odd error when trying to connect to a remote database:

Unable to establish remote connection: Unsupported URL scheme.
Got 'https://', expected 'bolt://', 'bolt+routing://', 'neo4j://', 'neo4j+s://', 'neo4j+ssc://', 'http://' or 'https://'

So my db URL begins https://, which is apparently not valid, even though it's listed as valid in the error message! Is this a bug, or am I missing something?

I'm encountering the same issue using Neo4j Desktop v1.4.12 and using https.

Update: turns out the root cause was related to the database I was trying to connect to, not the protocol.