This might be a bug due to meta information table value not matching the actual column size.
select c.tablename, p.columnname, p.dbType, p.maxlength, p.pkid from orclassmetainfo c inner join orpropertymetainfo p on p.fkORClassMetaInfo = c.pkid where c.tablename = 'comextendedattributequalityml' and columnname = 'Quality';
The fix might be just a simple script that updates the maxlength field in the meta information table and a restart of the app along with remoting container.
Thanks Dmitriy, that was the issue. have applied a script.