A couple of observations: - We should move focus into the customization when it opens - Apparently preventingDefault on keyboard events makes problems go away (at least partially, I did not check every keyboard shortcut type we have was fixed by it), however, it also makes it so typing doesn't type, so that's not great.
Bug 1815210 Comment 2 Edit History
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A couple of observations: - We should move focus into the customization when it opens - Apparently preventingDefault on all (document level) keyboard events makes problems go away (at least partially, I did not check every keyboard shortcut type we have was fixed by it), however, it also makes it so typing doesn't type, so that's not great.