The "Drawback Feat" boon doesn't work in the UI. It has a "Add feat (1 remaining)", but when you click it an select a feat, it doesn't mark the feat in any way as a Bonus feat, so the "(1 remaning)" doesn't go down, and it consumes one of your actual feat slots.
I think it needs to have "<autotag group="Helper" tag="Free"/>" on the panel (and likely some additional tag, so only the correct feats appear in this UI), as well as some logic in a component to actually decrement resSPDBFt.resLeft somewhere.