Sending the outline to the shared-transition overlay stopped it hiding
behind its own cell, but it also lifted it out of the layer AnimatedContent
fades the outgoing page with — so it stopped fading at all. It stood at
full strength for the whole expand or collapse and then blinked out at the
end, which is the opposite half of the same bug.
The fade is reapplied on the lifted content's own layer, so it travels with
it. That belongs in morphOverlay rather than at the call site: anything
sent to the overlay loses the parent's fade the same way.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jean-Luc Makiola
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