Ok, I see the bug. I think the markers are just not loading the large reverb effect. The effect isn't being applied to the instrument because it isn't loaded. Should be easy to fix.
If you don't want to wait for the fix, as a work around you can just open the advanced instrument settings of one of the instruments, and it will load the effect. Alternatively, instead of putting a marker right at the start to set the effect, you can just set it directly in the advanced instrument settings.
If you don't want to wait for the fix, as a work around you can just open the advanced instrument settings of one of the instruments, and it will load the effect. Alternatively, instead of putting a marker right at the start to set the effect, you can just set it directly in the advanced instrument settings.