3.18.0-beta.5: Error: "Error attempted to close a tracking frame, but one was not open"

[scottmessinger]

I'm super confused by this error I just ran into after upgrading to 3.18.0-beta.5.

`Error attempted to close a tracking frame, but one was not open `

endTrackFrame@https://localhost:4200/assets/vendor.js:71789:13
track@https://localhost:4200/assets/vendor.js:71879:13
value@https://localhost:4200/assets/vendor.js:63061:47
value@https://localhost:4200/assets/vendor.js:64494:37
initialize@https://localhost:4200/assets/vendor.js:62486:53
peek@https://localhost:4200/assets/vendor.js:62455:21
@https://localhost:4200/assets/vendor.js:66275:18
evaluate@https://localhost:4200/assets/vendor.js:65485:19
evaluateSyscall@https://localhost:4200/assets/vendor.js:68458:22
evaluateInner@https://localhost:4200/assets/vendor.js:68414:14
evaluateOuter@https://localhost:4200/assets/vendor.js:68406:14
next@https://localhost:4200/assets/vendor.js:69393:24
execute@https://localhost:4200/assets/vendor.js:69377:23
handleException@https://localhost:4200/assets/vendor.js:68586:23
handleException@https://localhost:4200/assets/vendor.js:68762:31
throw@https://localhost:4200/assets/vendor.js:68506:18
evaluate@https://localhost:4200/assets/vendor.js:66334:12
execute@https://localhost:4200/assets/vendor.js:68489:16
rerender@https://localhost:4200/assets/vendor.js:68790:10
RootState/this.render/this.render@https://localhost:4200/assets/vendor.js:26998:36
runInAutotrackingTransaction@https://localhost:4200/assets/vendor.js:71271:9
_renderRoots/<@https://localhost:4200/assets/vendor.js:27299:59
inTransaction@https://localhost:4200/assets/vendor.js:65436:9
_renderRoots@https://localhost:4200/assets/vendor.js:27273:37
_renderRootsTransaction@https://localhost:4200/assets/vendor.js:27334:14
_revalidate@https://localhost:4200/assets/vendor.js:27376:12
invokeWithOnError@https://localhost:4200/assets/vendor.js:72944:18
flush@https://localhost:4200/assets/vendor.js:72825:19
flush@https://localhost:4200/assets/vendor.js:73031:21
_end@https://localhost:4200/assets/vendor.js:73585:34
Backburner/this._boundAutorunEnd@https://localhost:4200/assets/vendor.js:73234:14

The error appears to originate from here:

export default class MenuComponent extends Component<Args> {
  get hasUsedTemplates() {
    return this.args.usedTemplates?.content?.length > 0
  }
}

  {{#if this.hasUsedTemplates}}
    <div></div>
  {{/if}}

I went version by version from 3.17.2 through 3.18.0-beta.5 to see where the error started and it only happens in 3.18.0-beta.5. The only commit that is unique to beta.5 seems to be this one:

#18861

Is there something I'm doing wrong? Or, is this a bug introduced by that commit?

[bendemboski]

FYI, this has been discussed in Ember discord, and it looks @pzuraq has a line on a fix.

[pzuraq]

yeah, I'll get to it this week for sure, definitely need to get this fixed asap!

[pzuraq]

This should be fixed by #18869