Global - Sound Button Becomes Transparent After Completing a Section
Odd little quirk -- once you get into the questions, the Sound/Mute button becomes inactive and transparent. This is normal. However, once you've finished the questions and the section, then go into another topic, the Sound/Mute button does not appear "active" again -- it's still transparent-looking. It does work, however. It should appear normally once you get back into other sections.