Hey,
So this looks like an issue with Multiplayer. The reason you are likely seeing this is because your running it both on the Server and the Local Client here. If you only want this to happen on server you can add a HasAuthority node at the beginning of the Tick and only run the logic if Authority.
The issue you might run into here is the client might see things incorrect if they have a higher ping. In this case you will need to look at implementing some Client Prediction for tjos system.