Adding jsdoc to overriding method makes inherited jsdoc disappear

When adding doc to a class for API level, if we add more doc inside the implementation, we lost some documentation !
ex here, i add * @example $AA.method() and if i add tag @implement or any others in the childClass, we lost documentations from parent and for the API level.

This image show tag:@example $AA.method() is removed!, because we add more doc in AA.method !

The expected behavior should be look like this (push docs and no replace) .
Work only if we add in parent , but should work if we add in child class.

• VS Code Version:
  Version : 1.55.0 (user setup)
  Commit : c185983a683d14c396952dd432459097bc7f757f
  Date : 2021-03-30T16:01:55.261Z
  Electron : 11.3.0
  Chrome : 87.0.4280.141
  Node.js : 12.18.3
  V8 : 8.7.220.31-electron.0
  OS : Windows_NT x64 10.0.19042

Steps to Reproduce:

Add doc to AA.method will remove some docs in the A.method

abstract class A {
	/**  `method` to be implement for the class AA
	 * @example $AA.method()
	 */
	abstract method(): any;
}

class AA extends A {
	/**
	 * @implements more info on the implementation
	 */
	method() {
		throw new Error('Method not implemented.');
	}
}

Does this issue occur when all extensions are disabled?: Yes

Reproduce the abstract A/AA example in VS Code with extensions disabled and compare the rendered documentation for the inherited method. Trace the TypeScript language-service handling of JSDoc on overridden methods, then add or update a regression test if the relevant test area is found. Done means implementation documentation is added without removing inherited examples or API-level text.