This seems to happen on every tab switch. Here's a profile of switching between to bugzilla tabs: https://perfht.ml/2MF5tsl
Looks like some people find it useful that their draft comment is synced between tabs  but it’s probably not an expected behaviour for the comment restore functionality, which should be triggered only when the page is loaded. I’d remove the `pageshow` and `focus` event listeners while keeping `DOMContentLoaded`. (I’m not the implementer of the functionality.)  https://twitter.com/kelimuttu/status/1039068104066658304
Assignee: nobody → kohei.yoshino
Status: NEW → ASSIGNED
Component: Extensions: BMO → User Interface: Modal
`pageshow` is fine, `focus` is the culprit.
Merged to master.
Status: ASSIGNED → RESOLVED
Last Resolved: 6 months ago
Resolution: --- → FIXED
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