We're now seeing this in the `contenteditable` editor that we're introducing for Pontoon, Mozilla's own localization platform. We're using CodeMirror 6 for the editor, which has its own keyboard handling. I'm attaching a screen recording of the behaviour with it. Andrew, would this be sufficient to update the status of this bug? This problem does not occur on a bare HTML element that uses `contenteditable` and `spellcheck`, so it may be related to how DOM modifications are handled.
Bug 1837268 Comment 2 Edit History
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We're now seeing this in the `contenteditable` editor that we're introducing for Pontoon, Mozilla's own localization platform. We're using CodeMirror 6 for the editor, which has its own keyboard handling. I'm attaching a screen recording of the behaviour with it. Andrew, would this be sufficient to update the status of this bug? This problem does not occur on a bare HTML element that uses `contenteditable` and `spellcheck`, so it may be related to how DOM modifications are handled. The bug is currently replicable on the Pontoon staging server: https://mozilla-pontoon-staging.herokuapp.com/