Bazaar will not push code to new series

[Travis Bean]

When I try to push code to a new series (bzr push lp:~tlbean/linuxsoho/24.04) I receive the following error:

brz: ERROR: Invalid url supplied to transport: "Unknown Launchpad path: lp:~tlbean/linuxsoho/24.04"

I am able to reproduce this error on Ubuntu Server 24.04 running Bazaar version 2.7.0+bzr6622+brz.

I can successfully push code to a new series with Ubuntu Server 22.04 running Bazaar version 2.7.0+bzr6622+brz.

[MestreLion (mestrelion)]

I'm getting this error when trying to push a local branch to my launchpad account. I'm trying to contribute a bug fix to a project hosted on Launchpad. The steps taken from a somewhat clean Ubuntu 24.04 are:

```
sudo apt install bzr
bzr branch lp:nautilus-compare
cd nautilus-compare
brz launchpad-login MestreLion
bzr whoami "Rodrigo Silva <email address hidden>"
# ... made some changes to fix a bug
bzr commit
bzr push 'lp:~mestrelion/nautilus-compare/nautilus-compare'
```

All commands prior to the last `bzr push` were successful. I was able to authenticate to Launchpad and authorize my desktop, my default SSH key is registered on Launchpad, etc etc.

The last command shows this error:
```
brz: ERROR: Invalid url supplied to transport: "Unknown Launchpad path: lp:~mestrelion/nautilus-compare/nautilus-compare"
```

[MestreLion (mestrelion)]

Additional info:

- bzr version
Breezy (brz) 3.3.5
  Python interpreter: /usr/bin/python3 3.12.3
  Python standard library: /usr/lib/python3.12
  Platform: Linux-6.8.0-49-generic-x86_64-with-glibc2.39
  breezy: /usr/lib/python3/dist-packages/breezy
  Breezy configuration: /home/rodrigo/.config/breezy
  Breezy log file: /home/rodrigo/.cache/breezy/brz.log

- This is most likely related to https://bugs.launchpad.net/brz/+bug/2008103

- It works when using this alternate "URL", but that feels very hackish:
```
bzr push 'bzr+ssh://bazaar.launchpad.net/~mestrelion/nautilus-compare/nautilus-compare'
```

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jelmer Vernooij (jelmer)]

Are you able to reproduce this with the latest version of Breezy, 3.3.9?

[Thomas Bechtold (toabctl)]

I can still reproduce this with the breezy version from Plucky:

$ bzr version
Breezy (brz) 3.3.9
  Python interpreter: /usr/bin/python3 3.13.1
  Python standard library: /usr/lib/python3.13
  Platform: Linux-6.11.0-13-generic-x86_64-with-glibc2.40
  breezy: /usr/lib/python3/dist-packages/breezy
  Breezy configuration: /home/tom/.config/breezy
  Breezy log file: /home/tom/.cache/breezy/brz.log

$ bzr push lp:~toabctl/merge-o-matic/py312
Ignoring insteadOf lp: in git config, because the Launchpad plugin is loaded.
brz: ERROR: Invalid url supplied to transport: "Unknown Launchpad path: lp:~toabctl/merge-o-matic/py312"

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.