yes, similar. I can (apple music or classical) start a tune, switch output to the homepod (several tried, all version 18). after 4-5 seconds (after play bu
tton starts the music), the output switches back to the iphone (or to my bets flex earbuds, connected to the iphone). This does NOT happen with the iPad, ios 18 (3rd generation iPad Pro). On my iphone, pulling up the screento switch, the available devices to switch to are separated by a box-spearation -- above the line, my iphone and the beatrs flex (when connected). Below the line, all my homepods, apple tv, etc.. Those beneath the line are the ones that cannot hold the stream.
Incidentally, this is a CONTROL CENTER problem -- (I think) if I switch the stream to the homepod by holding the phone close to it, the stream stick to the homepod. But, not if I select the homepod via the control panel.
iphone 13 pro Max, ios 18, etc.