input[type="checkbox] doesn't work with array model and false-value

[nickmessing]

Version

2.4.1

Reproduction link

https://jsfiddle.net/1knrexuq/

Steps to reproduce

1. Create an <input type="checkbox" value="hello">.
2. Bind it to an array using v-model.
3. Add :false-value="'something truthy'" property.

What is expected?

Toggling the checkbox toggles the hello string in array.

What is actually happening?

Toggling the checkbox adds the string to array but doesn't remove it.