In some cases The butterfly switches can also break completely, causing the affected key to detach from the keyboard, the complaint says eschrift. Customer complaints about the keyboard of the MacBook Pro 2016 and 2017 have been around since the laptops are on the market. Indications of non-functioning keys, strange high pitched tones on some keystrokes and keys with uneven touch have since plagued the users. An excerpt from the lawsuit filed Tuesday by law firm Schubert Jonckheer & Kolbe before the Northern California District Court has published Macrumors
The mechanism, the Apple since 2015 on MacBooks and from 2016 on MacBook Pros are even flatter than scissor keyboards. Although the keys are still supported by two intersecting plastic parts, their profile is so low that the key hardly "wanders" when pressed. True to their name, butterfly switches are also very delicate and are held in place by four tiny threads of brittle plastic.
However, when dust or other small particles get under the keys, it becomes problematic. Users can not remove the keys without risk of damaging the keyboard.
The complainants claim that "thousands of consumers" suffer from these problems. There are indeed numerous blog posts, tweets, forum comments, and a Change.org petition that has received over 27,000 signatures.
There is even a video on this topic: "I Am Pressing The Spacebar and Nothing Is Happening ", uploaded to YouTube by Jonathan Mann.