Is this abandoned?

[Yaro77]

I got tired of my Vue projects and I'm thinking of building more classic SSR apps (anyway Asp.net core backend is mandatory in the company I work for).
So I've discovered for myself Stimulus recently and started to play with it.

<button data-controller="counter" data-action="counter#increment">Count is 0</div>

with controller

export default class extends Controller {
  static values = {
    count: {
      type: Number,
    }
  };

  increment() {
    this.element.innerHTML = `Count is ${this.countValue}`;
  }
};

and it works.
Wait, I didn't set the data-counter-count-value or default in the static values count definitions.
Then I checked hasCountValue and it returns true. So I guessed I found a bug.
I checked the Issues and found one #772. Then I checked the repo, there's no tests (Edit: I was wrong here). And a lot of unmerged pull-requests.

My question: Is this project abandoned?