Known issues with JSON field type?

I am using MonetDB 11.19.9 and using a JSON field type in my database. I am new to MonetDB and experienced with SQL and databases.

I find when I try to store some json strings that I think are valid json, the database complains on row insert.

For example, the following don't work:

insert into foo (jdata) values ('["a", "b\c"]');

insert into foo (jdata) values ('{"abc": ""}');

The first problem is with the quoted backslash. The second problem is with the double quotes. If I remove the quoted backslash it works, likewise replace double quotes with null and it works.

This is my table create:

create table foo ( jdata json );

My read of the JSON spec is that this is legal JSON. Are there known issues with JSON support in MonetDB?

Thank you,

Michael Helmke