Hi!
In Modeler version 1.8.0 (I use the Mac version), if I want to add a text annotation to a data object, no connector is drawn, furthermore, the Modeler does not let me to draw the connector between the two object (annotation box becomes red). It seems to be a bug.
By the way Camunda Modeler is the coolest BPMN tool ever
Regards,
Attila Horváth