Casks with `choices:` failing to install after commit `2d33360`

[jabenninghoff]

brew doctor output

Your system is ready to brew.

Verification

• I ran brew update twice and am still able to reproduce my issue.
• My "brew doctor output" above says Your system is ready to brew or a definitely unrelated Tier message.
• This issue's title and/or description do not reference a single formula e.g. brew install wget. If they do, open an issue at https://github.com/Homebrew/homebrew-core/issues/new/choose instead.

brew config output

HOMEBREW_VERSION: 5.1.13-47-gdf39236
ORIGIN: https://github.com/Homebrew/brew
HEAD: df392361c85aefd236ee5e102d2c205748341b7a
Last commit: 16 hours ago
Branch: HEAD
Core tap HEAD: 9fc7ca1f1ad4ed2923d7735bff284500ef2875ab
Core tap last commit: 22 minutes ago
Core cask tap HEAD: 247ef0809f400dcab21d11b1305fe58007c7ddca
Core cask tap last commit: 79 minutes ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_CLEANUP_MAX_AGE_DAYS: 36500
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.PILRZnuqZt/org.xquartz:0
HOMEBREW_DOWNLOAD_CONCURRENCY: 32
HOMEBREW_EDITOR: /usr/bin/vim
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_GITHUB_API_TOKEN: set
HOMEBREW_MAKE_JOBS: 16
HOMEBREW_SORBET_RUNTIME: set
HOMEBREW_USE_INTERNAL_API: set
Homebrew Ruby: 4.0.5 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/4.0.5/bin/ruby
CPU: 16-core 64-bit kabylake
Clang: 17.0.0 build 1700
Git: 2.54.0 => /usr/local/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.7.7-x86_64
CLT: 26.3.0.0.1.1771626560
Xcode: 26.3

What were you trying to do (and why)?

Installing any Cask with a choices: stanza fails with an error message indicating the choices file was not found. The brew install command runs successfully before commit 2d33360 and fails after. (tested using git checkout in /usr/local/Homebrew). Initially reported in Homebrew/homebrew-cask#265879.

What happened (include all command output)?

Installing Microsoft Teams (for example):

% brew install microsoft-teams  
==> Fetching downloads for: microsoft-teams
✔︎ Cask microsoft-teams (26106.2113.4690.1073)                                                          Verified    350.6MB/350.6MB
==> Installing Cask microsoft-teams
==> Running installer for microsoft-teams with `sudo` (which may request your password)...
Password:
installer: Package name is Microsoft Teams
installer: choices file '/private/tmp/choices20260523-27719-4uwt8k.xml' either could not be found or was malformed.==> Purging files for version 26106.2113.4690.1073 of Cask microsoft-teams
Error: Failure while executing; `/usr/bin/sudo -u root -E LOGNAME=jabenninghoff USER=jabenninghoff USERNAME=jabenninghoff -- /usr/sbin/installer -pkg /usr/local/Caskroom/microsoft-teams/26106.2113.4690.1073/MicrosoftTeams.pkg -target / -applyChoiceChangesXML /private/tmp/choices20260523-27719-4uwt8k.xml` exited with 1. Here's the output:
installer: Package name is Microsoft Teams
installer: choices file '/private/tmp/choices20260523-27719-4uwt8k.xml' either could not be found or was malformed.

What did you expect to happen?

Successful installation of Microsoft Teams.

Step-by-step reproduction instructions (by running brew commands)

brew developer on
brew update
brew install microsoft-teams