Strange behavior with nested arrays and checkboxes

[bux]

Version

2.5.13

Reproduction link

https://codepen.io/bux578/pen/eVMrbe?editors=1011

Steps to reproduce

• Open codepen
• Click through checkboxes

What is expected?

clicking on the first row of checkboxes should trigger the watcher

What is actually happening?

It's not triggered, the changes to the upper row are performed when one of the checkboxes in the lower row are clicked

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I might be doing something wrong here.

[posva]

Since it works with type=text, it makes sense to also support it with checkbox