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     Technical task Technical task
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    Resolution: Fixed
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    P1: Critical 
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    None
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        I2930c594e862800ee433bf979aebb9db5fd189d1,I398cc607abf3f5002266cb56c2a4d0dc37617200
Add an object to tree. Start dragging the object to a different place in the tree. Press delete or undo the object addition. Release the mouse button -> crash.