Task gets hidden on the designer while designing process

[logicallimit]

I am modeling a process  using eclipse designer plugin. But quite frequently the tasks gets hidden on the diagram.

The task is still there as the flow lines behave as if they are connected with some task when I drag them a bit. So it means task is still there but it is not showing up on diagram.

I am using Sprint tool source based on eclipse 4.5:
=====================
Spring Tool Suite

Version: 3.7.3.RELEASE
Build Id: 201602250940
Platform: Eclipse Mars.2 (4.5.2)
=====================

Has someone faced this problem before?

[logicallimit]

Again this happened with some other task in the workflow. I tried using eclipse kepler also but same thing happening. Has anyone ever faced this kind of problem?

[pavan_andhukuri]

Open the BPMN file using a text editor and search for the task which is hidden (You can identify that using a connecting flow's target ref for example). 

Once you identify, go to the corresponding shape properties and change the x and y coordinates by a good margin. 

Once you do that, open the bpmn file again using Activiti and your task should be visible.

This is a work around for now