Yup. At first I blamed Spotify. Then Apple. Then I learned it was Mazda to blame:

1. "Intelligently filter content when the vehicle is moving. Certain cars may cause CarPlay to truncate lists of content when the vehicle is in motion or has exceeded a certain speed."

2. contentLimitsEnforced: A Boolean value indicating whether contents limits are enforced by the content server.

3. enforcedContentItemsCount: Returns the number of content items that are displayed when content limiting is enforced.

[1] https://developer.apple.com/design/human-interface-guideline...

[2] https://developer.apple.com/documentation/mediaplayer/mpplay...

[3] https://developer.apple.com/documentation/mediaplayer/mpplay...