When I look at the patch, e.g. https://gerrit.wikimedia.org/r/#/c/302424/, it is very hard to see with new Gerrit UI which patches this patch relies on. There are "related changes", but they are just the list, without any dependency order, so it's unclear which one is parent and which is a child.
There's parent commit listed, but it's just a hash, which gives no information about which change it is unless you browse through all the changes and check commit hashes.
Old Gerrit UI had dependent and parent changes listed explicitly, so one can know what is the picture of patch dependency. I think this should be restored, currently it is very hard to see the picture.