Doesn't appear to push to multiple remotes, unlike `git push`

Describe the bug I have multiple git remotes, as described in https://seirdy.one/posts/2020/11/18/git-workflow-1/

The repo in question is https://git.sr.ht/~skyfaller/twentyeleven-skyfaller

My .git/config looks like this:

[core]
	repositoryformatversion = 0
	filemode = true
	bare = false
	logallrefupdates = true
[remote "origin"]
	url = git@git.sr.ht:~skyfaller/twentyeleven-skyfaller
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@codeberg.org:skyfaller/twentyeleven-skyfaller.git
	url = git@github.com:skyfaller/twentyeleven-skyfaller.git
[branch "master"]
	remote = origin
	merge = refs/heads/master
[remote "gh_mirror"]
	url = git@github.com:skyfaller/twentyeleven-skyfaller.git
	fetch = +refs/heads/*:refs/remotes/gh_mirror/*
[remote "cb_mirror"]
	url = git@codeberg.org:skyfaller/twentyeleven-skyfaller.git
	fetch = +refs/heads/*:refs/remotes/cb_mirror/*

When I make changes to my git repo, and use gitui to Push [p], it only pushes to one remote, in this case GitHub / gh_mirror.

It appears it pushes to the remote which is listed last. This doesn't parallel git's behavior, git prioritizes the URL that is listed first when pulling:

> git pull origin -v
From git.sr.ht:~skyfaller/twentyeleven-skyfaller
 = [up to date]      master     -> origin/master
 = [up to date]      static     -> origin/static
Already up to date.

But since gitui should push to all of the URLs rather than picking one anyway, this isn't important.

When I use git push after using gitui to push, I see:

> git push
Enumerating objects: 5, done.
Counting objects: 100% (5/5), done.
Delta compression using up to 8 threads
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 468 bytes | 468.00 KiB/s, done.
Total 3 (delta 2), reused 0 (delta 0), pack-reused 0
To git.sr.ht:~skyfaller/twentyeleven-skyfaller
   e714d73..0370dee  master -> master
Enumerating objects: 5, done.
Counting objects: 100% (5/5), done.
Delta compression using up to 8 threads
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 468 bytes | 468.00 KiB/s, done.
Total 3 (delta 2), reused 0 (delta 0), pack-reused 0
remote: . Processing 1 references
remote: Processed 1 references in total
To codeberg.org:skyfaller/twentyeleven-skyfaller.git
   e714d73..0370dee  master -> master
Everything up-to-date

As you can see, git push is successfully pushing to the other remotes that gitui did not.

Expected behavior I expect the behavior of git push and gitui's "Push" function to be identical.

Context (please complete the following information):

• OS/Distro + Version: Fedora Linux 36 (Workstation Edition) x86_64
• GitUI Version: gitui 0.21.0 (installed from Linuxbrew)