[System Version]: deepin V23 [Preconditions]: Turn off all sound devices in the sound settings so that no output devices are detected [Reproducibility Steps]: Open firefox (I installed mine via the Firefox PPA on offical page which is a .deb file), then open any webpage. Then press the backtick (`) key on the keyboard, assuiming that the backtick is not in the text of the webpage you just opened. Since this simulates trying to find all the backtick characters in the webpage and none were found, firefox returns an error but it also plays a sound, similar to a terminal bell [Expected Results]: No sound should be played if audio devices are turned off [Actual Results]: A sound is played despite all audio devices being turned off