No distinction made between pregap track and position 1 with number 0 when displaying a release

I've created an example at https://musicbrainz.org/release/c473cbc0-58f0-4895-a98a-295e13c6b838

If you edit the release, you can see on the tracklist tab that one has a pre-gap track, the other has "0" as the track number for track 1. When displaying the release, there's no distinction.