sendTimelineMarkers - Cannot read properties of null (reading 'id')

[guillaumeduliscouet]

Version

6.0.6
Vue 2

Browser and OS info

Chrome 98

Steps to reproduce

Open https://nukh9.csb.app/

Open the Vue devtools, timeline tab

Refresh the page

You should have this error:

Sandbox link: https://codesandbox.io/s/gracious-framework-nukh9?file=/src/main.js:182-208

It is the Vue2 template with only this change:

new Promise((resolve) => {
  setTimeout(resolve, 1000)
}).then(() => {
  new Vue({
    render: h => h(App)
  }).$mount("#app");
})

What is expected?

Rendering the Vue app after a delay should not cause an error in devtools

What is actually happening?

It creates an error on second load, if the timeline tab was activated

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I have had other similar errors on the initialisation process. I'll try to create repros for those too