Correct, because you have "toggle on" so if "B" is your key bind to activate this sub config and build mode. You should implement a small delay 50ms and add De activation keys like Y for pick axe and maybe X for reload? IDK, but do not use B for a de activation key. I'd also suggest disabling "B" from this sub config. If you need the "B" key when in this sub config/mode then set a different key as a secondary bind to the "B" key. As stated previously in this thread the reason for disabling this "B" key is because no matter what, The Activation key will always serve as a De activation key but using in this way can cause problems.
So, to try and tidy this up. If I want a sub config for building. You should:
-Select "toggle on"
- assign the "B" key to a key bind for simplicity bind to "B"(This key binding will be done in Hip aim)
-Add a 50ms delay
-add De-activation Keys "Y" bound to Y and "X" bound to "X" (Key bindings done on new sub config page likely titled Build) FYI, keybinds can be set to any KB/mouse button you'd like.
-Unbind "B" from sub config (Do this by double tapping the in manager on "B"
- For "B" button on XBOX controller to remain active, under secondary bindings assign "B" to a different KB key.
I believe this will work for you, I do not have a sub config for building personally but have set up quite a few sub configs for other games.