When using in an addon the helper throws unexpected error

When I use the following code directly in `application.hbs` it works:
```hbs
//application.hbs
{{#let (element 'h1') as |Tag|}}
Test
{{/let}}
```

Scenario with error:
This component comes from an addon
```hbs
//heading.hbs
{{#let (element 'h1') as |Tag|}}
{{yield}}
{{/let}}
```

```hbs
// application.hbs
Test
```

throws the following error:

```error
Uncaught (in promise) Error: Assertion Failed: The `element` helper polyfill encountered an unexpected error. Please report the issue at http://github.com/tildeio/ember-element-helper with the usage and conditions that caused this error.
Ember 3
deprecateMutationsInTrackingTransaction validator.js:180
Ember 2
cache manager.js:949
tag reference.js:161
track validator.js:820
valueForRef reference.js:160
runtime.js:2479
evaluate runtime.js:1284
evaluateSyscall runtime.js:5179
evaluateInner runtime.js:5135
evaluateOuter runtime.js:5127
next runtime.js:6259
_execute runtime.js:6243
execute runtime.js:6213
sync runtime.js:6316
runInTrackingTransaction validator.js:154
sync runtime.js:6316
Ember 3
inTransaction runtime.js:5021
Ember 5
invoke backburner.js:340
flush backburner.js:229
flush backburner.js:426
_end backburner.js:960
_boundAutorunEnd backburner.js:629
promise callback*buildNext/< backburner.js:28
flush Ember
_scheduleAutorun backburner.js:1179
_end backburner.js:970
_boundAutorunEnd backburner.js:629
promise callback*buildNext/< backburner.js:28
flush Ember
_scheduleAutorun backburner.js:1179
_end backburner.js:970
_boundAutorunEnd backburner.js:629
promise callback*buildNext/< backburner.js:28
flush Ember
_scheduleAutorun backburner.js:1179
_ensureInstance backburner.js:1167
schedule backburner.js:776
Ember
fulfill rsvp.js:428
resolve$1 rsvp.js:403
initializePromise rsvp.js:526
Ember 2
initializePromise rsvp.js:520
Promise rsvp.js:1021
Ember 5
invokeCallback rsvp.js:493
publish rsvp.js:476
Ember
invoke backburner.js:338
flush backburner.js:229
flush backburner.js:426
_end backburner.js:960
_boundAutorunEnd backburner.js:629
promise callback*buildNext/< backburner.js:28
flush Ember
_scheduleAutorun backburner.js:1179
_ensureInstance backburner.js:1167
index.js:172
```
​

What do I miss here?