filtering/mod conflict?

[BETLOG]

I'm not expecting this behaviour, I assume it is a conflict with one or more of:
Azumatt-AzuExtendedPlayerInventory-1.4.3
Azumatt-BowsBeforeHoes-1.3.9
Smoothbrain-Backpacks-1.3.4

ie:
with this inventory...

and these settings:

I expect to NOT see wood included.

and with these settings:

I never would have expected this result:

It's illogical, so I assume its a mod conflict.