[BUG] Desktop v1.8555.2 — Customize > Plugins panel greyed/uninteractive; 3 of 5 enabled Anthropic-curated plugins disappear; silent failure

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?

After Claude Desktop updated to v1.8555.2 on 2026-05-22 around 16:12 PDT, the
Customize > Connectors view broke in two distinct ways:

1. The Personal plugins panel is greyed out and unclickable. Four entries appear

in the sidebar — Aeons gamma, Aeons project, Engineering, and Legal — but
none of them can be clicked, toggled, or configured. The panel renders the
list, but the interaction layer is dead.

1. Three Anthropic-curated plugins disappeared entirely from the UI:

product-management, marketing, and productivity. All three were enabled and
visible before the update; after the update they are not in any section —
not Anthropic & Partners, not Personal, not Not Connected.

Additionally, Honcho — which Claude Code CLI's /mcp command confirms is alive
as a built-in MCP (plugin:honcho:honcho — connected — 5 tools) — no longer
appears in Desktop's Connectors view at all.

Note: Engineering and Legal are Anthropic-curated plugins that have been
incorrectly moved into the "Personal plugins" group with the operator's own
plugins, in addition to being greyed out.

What Should Happen?

Customize > Connectors should behave the way it did before v1.8555.2:

1. The Personal plugins panel should list only operator-built plugins (Aeons

gamma, Aeons project) and each entry should be clickable, toggleable, and
configurable.

1. All five Anthropic-curated plugins enabled prior to the update — engineering,

legal, product-management, marketing, and productivity — should appear under
the Anthropic & Partners group (NOT under Personal plugins) and be
toggleable.

1. Honcho should appear in the Connectors view (or the appropriate Plugins

group) as a connected built-in MCP, matching its status in Claude Code CLI's
/mcp output.

In short: all 15 plugins registered in installed_plugins.json should be
correctly rendered, grouped, and interactable in the Customize UI.

Error Messages/Logs

After v1.8555.2 applied at 2026-05-22 16:12 PDT, the plugin pipeline succeeded
  end-to-end with zero errors logged. Excerpts from
  ~/Library/Logs/Claude/main.log:

      2026-05-22 16:11:13 [info] [LocalPluginsReader] Found 7 local plugins
      2026-05-22 16:11:13 [info] [PluginsFetcher] fetchPluginEnabledState: 6 overrides
      2026-05-22 16:12:18 [info] [LocalPluginsReader] Found 5 enabled local plugins (7 installed)
      2026-05-22 18:22:24 [info] [PluginsFetcher] fetchAccountScopedRemotePlugins: 2 plugins from 1 marketplace(s)
      2026-05-22 18:22:24 [info] [PluginsFetcher] fetchBrowsableRemotePlugins: 47 plugins (offset=0, hasMore=false)

  So all upstream paths succeeded:
  - 7 local plugins read, 5 enabled
  - 6 enabled-state overrides tracked
  - 47 browsable remote (Anthropic-curated) plugins fetched
  - 2 account-scoped remote plugins fetched

  Filtered the full main.log for the post-16:12 window with:

      grep -iE '\[error\]|exception|TypeError|Cannot read|unhandled|throw' main.log \
        | grep -iE 'plugin|customize|connector|render|migration|installed_plugins|schema'

  → zero matches. No exception, warning, or error was logged in any plugin /
  customize / connector / renderer / migration / schema code path after the
  update. The UI freeze is a silent failure: data fetched correctly, controls
  not rendered/interactable, no diagnostic emitted.

  claude.ai-web.log (the renderer-side log) also shows zero plugin-related
  errors in the same time window.

Steps to Reproduce

Preconditions:

• Claude Desktop on macOS, account with plugins enabled prior to v1.8555.2.

Operator's machine had these enabled before the update:

• Anthropic-curated: engineering, legal, product-management, marketing,

productivity, plus Skill Creator / MCP Builder and Doc co-authoring

• Personal (operator-built): Aeons gamma, Aeons project
• Built-in MCP: Honcho (plugin:honcho:honcho)

Steps:

1. Be on a pre-v1.8555.2 Desktop build with the plugins above enabled.
2. Allow Desktop to auto-update to v1.8555.2 (2026-05-22 ~16:12 PDT).
3. Open Customize > Connectors after the update applies.

Observed:

• Personal plugins panel: four entries shown (Aeons gamma, Aeons project,

Engineering, Legal) — all greyed/uninteractive.

• Anthropic & Partners group: product-management, marketing, productivity

no longer appear in any section.

• Connectors view: Honcho is absent (still alive in /mcp on Code CLI).

Reproducibility:

• Persists across full Cmd-Q + relaunch.
• Persists across force-quit of all Claude/Anthropic processes + relaunch.
• Persists across rename of ~/Library/Application Support/Claude to a

backup and fresh-state launch (see "What I Tried" / workarounds section).

• Steady-state behavior on every launch, not an intermittent glitch.

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Yes, regression. Worked correctly in v1.7196.x (May 12-19, 2026) and all earlier Desktop builds. Broke after v1.8555.0 / v1.8555.2 applied on 2026-05-22.

Claude Code Version

2.1.148

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

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Additional context / screenshots:
Screenshots attached:

• Customize > Connectors view showing four greyed Personal-plugin entries
• /mcp output from Claude Code CLI showing Honcho as built-in MCP

(plugin:honcho:honcho — connected — 5 tools)

On-disk state (verified intact):

• ~/.claude/plugins/installed_plugins.json was rewritten to new schema

{version: 2, plugins: {...}} during today's update; 15 plugins registered
correctly including all the ones the UI fails to surface.

• ~/.claude/plugins/aeons-gamma/ and ~/.claude/plugins/aeons-project/ source

trees intact (since 2026-03-16); .claude-plugin/, commands/, skills/
subdirs all present.

Workarounds attempted (none fixed it):

• Full Cmd-Q + relaunch
• Force-quit all Claude/Anthropic processes + relaunch
• Renamed ~/Library/Application Support/Claude/ to a backup and let Desktop

rebuild fresh state on next launch (rolled back afterward; the freeze
persisted in the fresh-state launch, so the cause is NOT in that
plaintext directory)

• Updated upstream Honcho plugin marketplace to v0.2.4 via git pull on

~/.claude/plugins/marketplaces/honcho/

Related issues filed in the same v1.8555 release window (same release-cluster,
distinct presentations):
#61618 (Connectors list visually empty, labeled duplicate),
#61608 (sessions not saved to disk on bundle 1.8555.2 a476c3),
#61563 #61555 #61559 (CoWork token/Keychain/workspace regressions on v1.8555),
#61524 (MCP UtilityProcess spawn timeout; toggling any connector restarts all),
#61564 (LocalMcpServerManager duplicates local MCPs).

Paste each into its field.
⎿  Stop says: [honcho] response → saved response (2231 chars)

⏺ Ran 10 stop hooks (ctrl+o to expand)
⎿  Stop hook error: Failed with non-blocking status code: Traceback (most recent call last):
File "/Users/Seph/.claude/hooks/key-echo-guard.py", line 21, in <module>
from credential_patterns import hit_names # noqa: E402
ModuleNotFoundError: No module named 'credential_patterns'

✻ Cogitated for 47s

❯ Additional Information
Anything else that might help us understand the issue?

Screenshots (drag and drop images here)
Configuration files
Related files or code
Links to repositories demonstrating the issue
⎿  UserPromptSubmit says: [honcho] user-prompt ← context injected (stale)

⏺ Screenshots:

• Customize > Connectors view showing four greyed/uninteractive Personal-plugin

entries (Aeons gamma, Aeons project, Engineering, Legal)

• Claude Code CLI /mcp output showing Honcho listed under "Built-in MCPs

(always available)" as plugin:honcho:honcho — connected — 5 tools

Configuration files (state verified intact on disk):

• ~/.claude/plugins/installed_plugins.json — rewritten to new schema today

({version: 2, plugins: {...}}); 15 plugins correctly registered including
every plugin the Customize UI fails to surface or interact with.

• ~/Library/Application Support/Claude/claude_desktop_config.json — 9 stdio

MCP servers configured (context7, firecrawl, hume, iwork, macos-automator,
mempalace, obsidian, supabase, time-mcp), all currently connected.

• ~/.claude/plugins/aeons-gamma/ and ~/.claude/plugins/aeons-project/ —

custom plugin source trees, intact since 2026-03-16.

Workarounds attempted (none cleared the freeze):

• Full Cmd-Q + relaunch
• Force-quit all Claude/Anthropic processes + relaunch
• Renamed ~/Library/Application Support/Claude/ to a backup and let Desktop

rebuild fresh state on next launch — the freeze persisted on the fresh
launch, confirming the bug does NOT live in that plaintext directory's
caches. Rolled back afterward (state preserved by the rename, restored
with one mv).

• Updated upstream Honcho plugin marketplace to v0.2.4 via git pull on

~/.claude/plugins/marketplaces/honcho/.

Related issues filed in the same v1.8555 release window (same release-cluster,
distinct user-facing symptoms):

• #61618 — "Connector/MCP list visually empty" (labeled duplicate; this issue

is a different presentation of plausibly the same root cause)

• #61608 — sessions not saved to disk on bundle 1.8555.2 a476c3
• #61563 / #61555 / #61559 — CoWork token / Keychain / workspace regressions

on v1.8555

• #61524 — MCP UtilityProcess spawn timeout; toggling any connector restarts

every enabled connector

• #61564 — LocalMcpServerManager leaks duplicate local MCPs in app-lifetime

pool

Older same-pattern issues (closed) where Customize panel rendered but failed
to surface plugin data:

• #31597 (closed not-planned, March 2026)
• #48963 (closed, April 2026)