the result of prior simulation is not being erased after going back to home
steps to reproduce : insert any two input polynomials , multiply and see the result , press home again repeat the same , the new result comes overlapping onto the prior result
expected result : just the new answer on screen
actual result : overlap of new and old answer
the result of prior simulation is not being erased after going back to home steps to reproduce : insert any two input polynomials , multiply and see the result , press home again repeat the same , the new result comes overlapping onto the prior result expected result : just the new answer on screen actual result : overlap of new and old answer![Screenshot from 2019-03-17 18-03-08](https://user-images.githubusercontent.com/47666387/54491045-337a3800-48e1-11e9-8924-ff6bab597537.png)