Closed
Description
vercel.com observed a bug where a stylesheet hoisted using a precedence was reordered after an update. This is not correct semantics (once a hoisted stylesheet is inserted it should remain in place until removed)
Investigating the React implementation I observed that if you insert a hoisted stylesheet during a synchronous render and later render a new reference to that stylesheet in a transition React incorrectly considers the stylesheet not loaded and tries to coordinate it's loading the the commit. This is erroneous as once a stylesheet is in the DOM it should never be re-inserted (moved).