On Windows (and maybe other desktop OSes?) we avoid showing focus outlines unless the user moves focus in the document using [tab] or similar. Off-hand, it looks like https://searchfox.org/mozilla-central/rev/96f1457323cc598a36f5701f8e67aedaf97acfcf/dom/base/nsGlobalWindowInner.cpp#4095-4110 wants updating so we don't treat touch as focus.
Bug 1583381 Comment 5 Edit History
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On Windows (and maybe other desktop OSes?) we avoid showing focus outlines unless the user moves focus in the document using [tab] or similar. Off-hand, it looks like https://searchfox.org/mozilla-central/rev/96f1457323cc598a36f5701f8e67aedaf97acfcf/dom/base/nsGlobalWindowInner.cpp#4095-4110 wants updating so we don't treat touch as requiring a focus outline.