for issue # 2
this is normal for a CVT vehicle , i have observed the same in Axio 2014, Passo 2013 and civic 2017.
one you will also observe that applying sudden brakes on S at higher speed will cause the transmission to do down shifting and assisting in stopping the car.
Don't worry its a feature, not problem.
As mentioned by Honda-US for Civic CVT
Also, the transmission has been programmed to provide early downshifts during braking and features revised Step-Shift programming that simulates physical gear changes under hard acceleration for a more familiar and enjoyable driving experience.