i've just contributed this: https://beta.musicbrainz.org/release/01da4f41-1e82-4e2f-a5f7-bd4bad43f792

It's a single "stream" that contains covers of many tracks; I have set their order as they appear in the stream. The order is correct on the recording entity page:

https://beta.musicbrainz.org/recording/ad856e11-1e79-4771-b26e-11d828fe9a83

But on the release page the order is alphabetical, ignoring the set order.