Should flag "one of the [plural] **are**

This is a special case of the verb agreeing with the closest noun rather than the head of the noun phrase.

In this case the verb **are** should be the singular **is** to agree with **one**.

It seems to be especially common with "missing". It probably happens with a few other common verbs too, including "have" and "were".

Examples:

- Doesn't display LVM group if **one of the** PVs **are** missing
- Rare glitch where **one of the** frames **are** shortened/missing
- MultiServerMCPClient Failed if **one of the** MCP **are** down
- How to find if **one of the** items **have** completed property with value false
- PostgreSQL trigger if **one of the** columns **have** changed

Closely related:

- An example of a vulnerability might be a gate where the **gap** between _the door and the jam_ **are** too wide.
- If you're going out to buy a business, one thing you don't want **are** surprises.

No files, tests, or entry points are named. Start by locating the existing subject–verb agreement handling and compare it with the listed “one of the” examples and related cases. Done means the intended singular-agreement errors are flagged consistently without regressing nearby agreement behavior.

Written by the indexing model from the issue text.