An open accordion_panel() doesn't show visual indication when it receives focus

[cpsievert]

For example, pressing tab to bring focus to different panels does provide visual indication for A and C, but not B

accordion(open = "B",
  accordion_panel("A", "a"), 
  accordion_panel("B", "b"), 
  accordion_panel("C", "c")
)

[github-actions]

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