Most certainly not just me! <details> in popover (opened with popovertarget) breaks keyboard navigation.

Firefox: bugzilla.mozilla.org/show_bug.
Chrome: issues.chromium.org/issues/424
My test case: ollicle.com/jot/details-in-pop

The workaround in both browsers is to use JavaScript `showPopover()` to open the popover, thanks @keithamus

Safari is the good guy in this particular occasion

Update: showPopover is not the workaround I hoped for:

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