Reproduction steps

1. Open a python file
2. Type cmd = "SELECT col1, col2 FROM tbl"
3. Add #sql above (see sql highlighting)
4. Remove #sql, notice highlighting sticks
5. Only way to kill the lighting is to move line up / down

Current vs. Expected behavior

Current behavior: SQL highlighting is not removed as sql comment is removed
Expected: I expect the injected SQL highlighting to disappear as the comment is removed.

Zed version and system specs

Zed: v0.219.0+nightly.2060.93c447e874d1e6a669086c7c50c179fdef67faa0 (Zed Nightly 93c447e)
OS: macOS 26.1
Memory: 64 GiB
Architecture: aarch64

Attach Zed log file

Relevant Zed settings

Relevant Keymap

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None