Simulator not working

[komame]

What you are saying is odd because the keys DOT and ALPHA are not involved in entering this equation. I tried to reproduce this several times, but I never succeeded. The result is correct and none of the keys are stuck.

Please let me know which entry mode your Virtual Calculator is set to, Textbook or Algebraic, as this may be relevant (though I have already checked both with no success). To diagnose the problem, ensure everything functions correctly when you initially start entering the equation, then continue and observe at which point the keys get stuck on your side. If you are able to reproduce this issue multiple times in Virtual Calculator, then you can surely determine the moment when the keys get stuck.