Apple Macbook Pro with Touch Bar seem drawn with big problems. A large number of owners stating namely that they have problems with the new keyboard, based on Apple's "Butterfly mechanics". The technology was introduced back in 2015 with the super-thin Macbook.
The problems reported in moving keys themselves where some feel they get stuck, stop working, making strange noises and have no "tightness" at all.
on the Apple forums writes a user to his 15 inch from 2016 has been having problems with the key. When he writes tends to write the letter twice and it sets out with worry when he'll write the password.
Youtube user monstermac77 have trouble with strange sounds and he has posted a video (see above) that demonstrates the problem. It occurs when the machine heats up. Others have reported similar problems, combined with the keyboard stops responding.
So far it seems to touch 15 inch variant most, but there are reports that the smaller at 13 inches can also be affected. The same applies to the variant without the touch Bar.
If you experience trouble, you should take your computer to an authorized Apple dealer.