[BUG] Plugin version not respected

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

I have a plugin (https://github.com/serpro69/claude-toolbox) which I version via plugin.json version field ( https://github.com/serpro69/claude-toolbox/blob/01406d4601bd9478d6984dcea6b8269f672dcfaf/klaude-plugin/.claude-plugin/plugin.json#L4 )
I noticed that some changes I pushed to a skill were picked up by the LLMs, even though they weren't released as a new version yet.
I looked at the ~/.claude/plugin/marketplace and ~/.claude/plugin/cache , and the new changes were indeed there, under older version of the plugin.

Instead of respecting the plugin version, it always pulls master. This can be seen by both looking at the commit in the marketplace dir, as well as exploring the code in the cache dir.

I also tried some workarounds, like re-setting the version to 0.0.0 or "master" after doing a release, and it just pulls that instead, not respecting any semver rules whatsoever.

What Should Happen?

As per docs:

Setting version pins the plugin. If plugin.json declares "version": "1.0.0", pushing new commits without changing that string does nothing for existing users, because Claude Code sees the same version and keeps the cached copy. Bump the field on every release, or omit it to use the commit SHA.

Error Messages/Logs

Steps to Reproduce

1. Release a new plugin version
2. Make changes to the plugin (e.g. change a skill)
3. claude plugin marketplace update in a project that uses the plugin
4. Check the code in plugin marketplace and cache dirs in ~/.claude/plugins

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.150 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_