Stateflow Tabs Stop Working After Running A Simulation.

Hello, my simulations run as expected and exit without errors. However, I noticed every time after I run a simulation and click “Stop Debugging”, the tabs labeled “Simulation, Debug, Modeling, Format, etc” at the top of the screen no longer click and drop down. I’m forced to restart the entire application after a full simulation run. I also noticed when I do a simulation step by step, by clicking “Step Forward”, I have no problems. Why is this?