Cubase 8.0.5 Tempo track issue

Hi there.
I’ve update my Cubase 8 to the latest 8.0.5.

I noticed that opening the tempo track (ctrl+T) it doesn’t work as usual.

With the tempo track active (orange button in the left-top corner) i was usual to click at any point of the tempo line and then wiriting in the upper bar the tempo.

Now when I do this the tempo seems Ok but when I click Play, it returns to the main tempo (adjustable only by moving manually the tempo line).

Any suggest?