I thought maybe it was a bug since the new view just seems worse all around (it makes it significantly harder to tell exactly where a selection starts/stops, and it reduces the "resolution" of the track info because it wastes a bunch of space above and below that could be used to provide that resolution). Also, I couldn't find any mention of it in the notes (I'm on the latest, 2.3.2, on Linux Mint, and I'm not sure what repo I'm using for it but I think a normal one, as it says the package maintainer is "Debian Multimedia Maintainers ").
However, even after restarting I'm still having this bug, so I'm thinking/fearing it might actually be a "feature"
P.S. This is only in waveform view; spectrogram view is (thankfully) unaffected.