How to update v-model="value" if value is an array?

Question

Vue.js

I made my own component. The input value is an array. I specify v-model="tags" where

data: function() {
  return {
    tags : ['1','2','3'] 
 }
}

In my component, I change element 1 and send the message emit('input',['1','new value','3']), but the value of tags in the parent component does not change. More precisely, it seems to be changing, but not redrawn but not redrawn in {{ JSON.stringify(tags) }}
made
v-bind:value="tags"
v-on:input="onInput"
and in onInput

onInput: function(newValue) {
      console.log("newValue", newValue);
      this.tags = newValue;
    }

And in the console I see that the message is coming and the function is working, but nothing happens. Moreover, if you add this.tags('!!!') to the end of the function, then the value is updated.
I just can’t figure out what and where to tweak in my component so that everything is updated.