1.4.0-RC4 looks like it fixes this issue for my footswitch extension.
one remaining question: shouldn't the lights behave the same way on the footswitch extension as they do on the MOD? for switches like the main plugin bypasses, they do behave the same (OFF when bypassed, RED when active). however, for momentary buttons (i.e. TAP in Bollie Delay), on the MOD the light is GREEN when assigned and doesn't change when toggled, but on the footswitch extension it's never lit at all. is this by design? it's a bit confusing "in the heat of battle" on stage.