If an object (say an enlarged state in a state machine) has its origin (upper left corner) off the screen, that object is not drawn on the screen.

When drawing large sub-state diagrams this causes the parent state to vanish. Also colored rectangular regions will appear and disappear as their corner is scrolled on and off the screen.

Hello cwm9,

Thank you very much for your bug report. Although we'd like to ask you to submit a bug report to Astah Support at this level. It would be much appreciated if you could attach your .asta file or images that our Support can take a look at this behavior.

If you are using Astah UML or Astah Professional, and your diagrams are confidential, please export your diagrams into obfuscated XMI and then submit it to us.

FAQ: How to obfuscate .asta file

Many thanks,
SJ