"Activate/Deactivate already done" error in sequence diagram

0 votes
asked Mar 18 in Bug by stepaunov (120 points)
a-> b: test
activate a

deactivate a
activate a

This sequence diagram code causes an "Activate/Deactivate already done" error.
Tested in VS Code with beta .jar (http://beta.plantuml.net/plantuml.jar)
and online at www.plantuml.com/plantuml, result: 


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