Vue version

3.5.25

Link to minimal reproduction

https://play.vuejs.org/#__PROD__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

Steps to reproduce

1. Define a prop with type: [Boolean, String, Number] (Boolean listed first)
2. Set a default value of empty string: default: ''
3. Pass an empty string value to the component:
4. Check the received prop value in the component

What is expected?

When passing value="", the component should receive:

• this.value === "" (empty string)
• typeof this.value === "string"

What is actually happening?

When Boolean is the first type in the array, Vue incorrectly coerces the empty string "" to true:

• this.value === true
• typeof this.value === "boolean"

System Info

Any additional comments?

No response