Custom JSDoc type cannot be extended

[almaceleste]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.99.3
• OS Version: Linux x64 6.11.0-24-generic

Steps to Reproduce:

1. Define a base JSDoc type:

/**
 * @typedef {object} baseType
 * @property {string} baseProperty
 */

2. Define a child type and add a property:

/**
 * @typedef {baseType} childType
 * @property {string} childProperty
 */

Expected behavior: childType has baseProperty from baseType and childProperty from the own definition.

Actual behavior: childType has only baseProperty from baseType.

However, it works in WebStorm: