Eventing writes to wrong keyspace if collection name is long

For Eventing we seem to only support a max of 30 characters for the collection component of the keyspace.

If I create a bucket "a" scope "myscope" collection "collection-a123456789b123456789c123456789d123456789e123456789" the collection name is 62 character long (I should be able to make it 251 characters long as per https://docs.couchbase.com/server/current/learn/data/scopes-and-collections.html) 

Now if I make an eventing function as follows:

function OnUpdate(doc, meta) {

    log("Doc created/updated", meta.id, "writing 'new_doc'");

    src_col["new_doc"] = { "a": 1 };

}

With a bucket alias src_col set to the keyspace a.myscope.collection-a123456789b123456789c123456789d123456789e123456789 in r+w mode

I then deploy the function and create one document in the keyspace KEY "trigger" with data 

The function erroneously writes the data to the wrong collection! 

• a._default._default

WORKS (longest collection name seems to be 30 characters).

collection-a123456789b12345678

FAILS

collection-a123456789b123456789