[Data Sources] Unable to scan tables

I've successfully made a connection to a MySQL server via an SSH tunnel (setup by Tunnelier). I can see all the databases on this server.

When I click the button 'Refresh schema' PhpStorm is scanning the selected tables. For some databases this goes without errors but some other databases give me these message:

42 of 50 tables were loaded.
The following errors were encountered:
<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

<<removed table name>>
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)

I am running 3.0.1 RC but it doesn't give me any additional error information. How do I know what is wrong?