Pretty good video! Very rare that you caught a failure in action.
(IMHO) If you cannot shoot with gloves, there is a real problem ... good luck in the winter or real engagement. Also, if you cannot shoot a "Combat" pistol in "ANY" position there is a serious issue with the gun (hold on Mr. Enemy I need to stand up and get in a proper position.
Glock definately has changed the manufacturing procedure somewhere, but one would think that a test engineer (@ Glock) would have been all over it. Maybe Glock has joined the same apathetic engineering line that is molded by the bottom line as many companies have in the last decade.
Scary, for Glock.