Lightning Web Components – Fixing LWC Flow Screen Component Error: {$GlobalConstant.True} is Undefined

Is there a known issue with passing in the {!$GlobalConstant.True} into an LWC FSC?

When I pass {!$GlobalConstant.True} into a Boolean attribute on an LWC, the LWC doesn't receive anything. The variable is undefined.

When I pass {!$GlobalConstant.True} into a String attribute on an LWC, the LWC receives it as a boolean

Am I doing something wrong? Or is this a problem with the flow/lwc interaction.

See below for the setup of the LWC in flow, then the code for the LWC. As you can see, it's a really basic LWC, so can't see how there could be a problem with it.

Flow Screen showing the input variable into my LWC as {!$GlobalConstant.True}

Output:

However when I pass in TRUE from a formula, it works as expected

Flow Screen showing the input variable into my LWC as input_boolean_formula

Output:

inputBooleanExample.html

<template>
    inputBoolean: {inputBoolean}<br />
    type: {typeOfBoolean}
    <hr />
    inputString: {inputString}<br />
    type: {typeOfString}
</template>

inputBooleanExample.js

import { LightningElement, api } from 'lwc';

export default class InputBooleanExample extends LightningElement {
    @api inputBoolean;
    @api inputString;

    get typeOfBoolean() {
        return typeof this.inputBoolean;
    }

    get typeOfString() {
        return typeof this.inputString;
    }
}

inputBooleanExample.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
    <apiVersion>52.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__FlowScreen</target>
    </targets>
    <targetConfigs>
        <targetConfig targets="lightning__FlowScreen">
            <property name="inputBoolean" label="Input Boolean" type="Boolean" default="true" role="inputOnly" />
            <property name="inputString" label="Input String" type="String" default="true" role="inputOnly" />
        </targetConfig>
    </targetConfigs>
</LightningComponentBundle>