I am using the camunda modeler 2.6.0. When I drag and drop a new element (let's say it is a user task), then double click on it so you can add a Name, enter the name and do CTRL + S in Eclipse and in this point everything freezes, I am getting a popup saying that eclipse is waiting for user operation, but it never finishes. I either have to kill the process running eclipse or stop the action. I will attach a file with the log from eclipse.

Just to note, this has happened to me several times. Sometimes eclipse freezes completely (if you click on X instead of stop action) and in order to start it again sometimes I need to delete the eclipse workbench settings.