Just some further clarification… It seems that you will only have this issue if you save a default that has the bands SWITCHED ON. When I saved my preset, I actually intended to have them bypassed but just set up with my typical starting point in order to save a bit of time. I’ve now re-saved with all bands off and it’s cured the problem. So technically I’d call this a bug BUT in typical use, one would probably not encounter it.
I’ll stop freaking out now! 