The application does not update the Whiteboard for all users when a shape is deleted

REPRODUCIBILITY LEVEL:
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Always

STEPS:
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1. There must be two users watching the same Whiteboard (user A and user B).
2. Add a shape with the user A.
3. Remove the shape with the user A.
4. Watch the user B Whiteboard.

CURRENT RESULT:
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The application does not update the Whiteboard for the user B (removed shape is still displayed and the user is able to interact with it).

EXPECTED RESULT:
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The application should update the Whiteboard for all the users after every update action.