The same exception is thrown is you try to modify the shape of one of the connections.
The reason for this behaviour is that both implicit places on the connecting arcs have the same name:
<first_transition_name;second_transition_name> and the reference manager gets confused between them.
The fix is to forbid multiple arcs between transitions, thus avoiding implicit places with the same name.
The same exception is thrown is you try to modify the shape of one of the connections.
The reason for this behaviour is that both implicit places on the connecting arcs have the same name: transition_ name;second_ transition_ name> and the reference manager gets confused between them.
<first_
The fix is to forbid multiple arcs between transitions, thus avoiding implicit places with the same name.