React Native ShouldComponentUpdate not firing between Redux Props Changes - reactjs

Question

In optimizing my component for performance, I noticed that sequential shouldComponentUpdate calls were seemingly missing the prop change from my redux store. An example being:
In props:
uiBehavior: {
shouldShow: false,
}
Redux Action:
fireActionToShow()
Redux Reducer:
case ActionType.UPDATE_UI_BEHAVIOR: return {...state, shouldShow: true}
Then I'm seeing:
shouldComponentUpdate(nextProps) {
// Would expect to at some point see:
this.props.shouldShow === false
nextProps === true
// Instead, only seeing
this.props.shouldShow === false
nextProps === false
// then
this.props.shouldShow === true
nextProps === true
}
** Note that this clearly isn't the code, just an example
It seems to me that a prop change isn't causing a rerender attempt, or am I missing something?
Thanks.
Expanding for clarity, here is some of the real code:
*** the event in the Action updates the uiBehavior prop on the redux store.
componentDidUpdate(prevProps, prevState) {
const { uiBehavior } = this.props;
if (!_.isEqual(uiBehavior.lockAttributes, prevProps.uiBehavior.lockAttributes)) {
console.log('Lock has changed.'); // This never gets called
}
}
const mapStateToProps = function(state){
return {
uiBehavior: state.uiBehavior,
}
}
export default connect(mapStateToProps, mapDispatchToProps)(SlotMachine)
*** UPDATE
JS Call:
this.props.setGeneralUiKeyValue('lockAttributesInCart', !lockAttributes);
Action:
export const setGeneralUiKeyValue = (key, value) => { return { type: GENERAL_UI_UPDATE, key, value }}
Reducer:
export const uiBehavior = (state = {}, action) => {
let newUiState = {...defaultState, ...state}
switch (action.type) {
case uiActionTypes.GENERAL_UI_UPDATE:
newUiState.general = newUiState.general || {};
newUiState.general[action.key] = action.value;
return newUiState
default:
return newUiState;
}
return newUiState