Column type="LONGVARCHAR" fails

In version 3.0.4 this column definition:
<column name="exceptionMessage" type="LONGVARCHAR"/>
generates these datatypes:
Derby: CLOB
MySQL: LONGTEXT
SQLServer: NVARCHAR(max)
But since version 3.0.5 all of these three databases gets datatype LONGVARCHAR which is not a valid type in any of them.
If I change the type to "LONG VARCHAR" it works again, but this changes the checksum of the changelog...