Well, this gives me hope.
I started a GEM TSL Germany game last night. The plan is to build a galley asap and do some testing with the sound bug. The bug occurs when a unit has the side edge of the map in visibility range (for me, it was on the southwest side of Iceland). When this happens, the camera view 'jerks' or 'snaps' quickly. This is, apparently, the sign that the bug has taken effect. For me (at least), the sound didn't actually mute until my next reload. So... I want to test:
1) if the camera jerk will occur 100% of the time I have visibility of the edge of the map, and
2) if the jerk occurs, does it 100% mean a mute will follow.
I predict a lot of reloading in my near future.
I point out that I've circumnavigated the glove many times on GEM prior to the Australian patch. I've settled on Iceland. No problems.