[BUG] .claude/settings.json not applying ignorePatterns

Environment

• Platform (select one):
• [+] Anthropic API
• Claude CLI version: 0.2.86 (Claude Code)
• Operating System: Ubuntu 24.04
• Terminal: bash

Bug Description

Claude can see files I put in ignorePatterns in .claude/settings.json.

Steps to Reproduce

1. I create some files in the folder tests/.
2. I created .claude/settings.json with these contents:

{
  "ignorePatterns": [
    "tests/**"
  ]
}

1. I open claude code and ask it to list the files in tests. It can do so, seeing 7 files.
2. If I use claude config set ignorePatterns "tests/**", then claude is no longer able to see the files in that folder.

Expected Behavior

I expect it to be unable to list files after step 2.

Additional Context

Could be user error, but I see no way to add configs to the "shared project permissions" through the command line. I'm editing this settings file because https://docs.anthropic.com/en/docs/agents-and-tools/claude-code/overview#permission-rules lists .claude/settings.json as a valid location.