I’m surprised this is framed as “missing functionality” rather than a regression. First, being able to suppress a miniplayer (a use case this API appears tailor-made for) when appropriate is an incredibly reasonable expectation. Second, it worked as OP describes in 26.0, including the betas I tested.
Adopting the new API to align with the platform design language, only to see this change/breakage in the first dot release, is disappointing from a developer-experience standpoint
Topic:
UI Frameworks
SubTopic:
SwiftUI