I'm playing the FTB Endeavour 1.4.0 Modset on Minecraft 1.16 and have both a mining gadget and the building and exchanging gadgets. I wanted to bind all their menus to the same key so that I would have one key meaning 'access the settings for this device I'm holding' but if I set both the 'Settings Menu' of the building gadgets and the 'Open Mining Gadget's Settings' for MiningGadgets to the same key (doesn't seem to matter which) then neither work.

Please re-open if this is an issue still in 1.21

I'll look into this, I know we've had the same request on building gadgets as well