We saw the movie. We sat through the scene. To us, it seemed intentional and not a glitch.
"Please note: 'The Last Jedi' contains a sequence at approximately 1 hour and 52 minutes into the movie in which ALL sound stops for about 10 full seconds," the sign read. "While the images continue to play on the screen you will hear nothing. This is intentionally done by the director for a creative effect."
The theater chain apparently had been fielding complaints from moviegoers who thought that the sound system had gone out during the key scene, which occurs when Rebel Alliance leader Holdo (played by Laura Dern) decides to crash her ship into a First Order destroyer -- and sacrifice herself in the process. The Wrap
The creative effect appeared obvious. In any event the warning is pulled and people are being left to enjoy this wonderfully done movie.