CarPlay starts playing music after activating Siri even if no music was playing before

This issue has been driving me nuts: if I listen to music or a podcast, pause it, and then activate Siri using “Hey Siri,” the moment the Siri interaction ends it resumes playing the music/podcast, even though it has been paused before. This is natural behavior for when I interrupt playing audio, but very annoying when I’m driving with no music on. I’ve tested this and it happens with Spotify and the Apple Podcasts app, suggesting it’s a system-level issue. It doesn’t happen if there’s nothing playing in the “now playing” drop down in control center. It also doesn’t happen is I force quit the audio app before activating Siri. Is there some setting I can tweak to change this behavior, or is this just a bug?