Thanks, you’ve actually discovered a bug in Studio. We’re still working on a solution, but the gist of it is that the AHDSR modulator should not be applying a fade-in to a timelocked sound module when the cursor changes position due to logic markers unless the cursor actually leaves the module’s trigger region.
As a workaround, you might want to try creating two copies of your track 1 content, and using transition timelines to transition from one to the next; With transition timelines, you can click and drag the right edge of the transition timeline to drag in a destination region, allowing the content on the main timeline to play during the transition. A fade-in curve can be applied to this destination region by clicking and dragging its top-left corner. By assigning such regions to your second and third tracks, you’ll be able to fade in those tracks over the course of the transition. You can also perform a very similar procedure to fade out those tracks in a second transition region when you want them to fall silent. Note, however, that using this method means that your event will only be able to fade in and out the second and third tracks at specific points in your loop.