New Twiddle

controllers.application\.js

import Controller from '@ember/controller';
import { action } from '@ember/object';
import { inject as service } from '@ember/service';

export default class ApplicationController extends Controller {
  @service('nav-blocker') navBlocker;

  appName = 'Ember Twiddle';

	@action
  toggleNavBlocker() {
    this.navBlocker.isBlocking = !this.navBlocker.isBlocking;
  }
}

router\.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('food');
  this.route('bard');
});

export default Router;

routes.bard\.js

import Route from '@ember/routing/route';
import { inject as service } from '@ember/service';

export default Route.extend({
  navBlocker: service('nav-blocker'),
  
  queryParams: {
    bardQp: {
      refreshModel: true,
    },
  },
  
  actions: {
    willTransition(transition) {
      if (this.navBlocker.isBlocking) {
        transition.abort();
      }
    }
  }
});

routes.food\.js

import Route from '@ember/routing/route';
import { inject as service } from '@ember/service';

export default Route.extend({
  navBlocker: service('nav-blocker'),
  
  queryParams: {
    foodQp: {
      refreshModel: true,
    },
  },
  
  actions: {
    willTransition(transition) {
      if (this.navBlocker.isBlocking) {
        transition.abort();
      }
    }
  }
});

services.nav-blocker\.js

import Service from '@ember/service';
import { tracked } from '@glimmer/tracking';

export default class NavBlocker extends Service {
  @tracked isBlocking = false
};

templates.application\.hbs

<h1>Welcome to "Maximum call stack" Hell</h1>
<p>To reproduce:</p>
<ol>
	<li>Open your console</li>
	<li>Click on a "w/ Query Params" link</li>
  <li>Click "Block Transitions"</li>
  <li>Click on any other link</li>
  <li>Note the "Maximum call stack" error in your console</li>
</ol>
<button {{on "click" (action this.toggleNavBlocker)}}>
  {{#if this.navBlocker.isBlocking}}
		Unblock Transitions
  {{else}}
		Block Transitions
  {{/if}}
</button>
<br>
<br>
<hr>
<br>
<br>
<table>
  <tr>
  	<td>
      <LinkTo @route="food" @query={{hash foodQp=null}}>Food</LinkTo>
     </td>
     <td>
      <LinkTo @route="bard" @query={{hash bardQp=null}}>Bard</LinkTo>
     </td>
   </tr>
   <tr>
  	<td>
			<LinkTo @route="food" @query={{hash foodQp=true}}>Food (w/ QueryParams)</LinkTo>
     </td>
     <td>
			<LinkTo @route="bard" @query={{hash bardQp=true}}>Bard (w/ QueryParams)</LinkTo>
     </td>
   </tr>
 </table>
<br>
<br>
{{outlet}}
<br>
<br>

templates.bard\.hbs

<img src="https://149658804.v2.pressablecdn.com/wp-content/uploads/2021/08/image2.jpg" />

templates.food\.hbs

<img src="https://images.squarespace-cdn.com/content/v1/53b839afe4b07ea978436183/1608506169128-S6KYNEV61LEP5MS1UIH4/traditional-food-around-the-world-Travlinmad.jpg" />

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}