"Show Call Hierarchy" on interface method shows calls to return type's constructors instead

Environment:

Version: 1.61.0-insider (user setup)
Commit: 0c83ca1ced83259971d80890d93abbe19cbfc992
Date: 2021-09-15T05:16:32.507Z
Electron: 13.1.8
Chrome: 91.0.4472.164
Node.js: 14.16.0
V8: 9.1.269.39-electron.0
OS: Windows_NT x64 10.0.19042

• VS Code Version: 1.61.0-insider (user setup)
• Extension Version: 0.18.5
• JDK Type & Version: 11.0.10+9
• OS Type & Version: Windows 10 Pro (20H2 19042.1165 Windows Feature Experience Pack 120.2212.3530.0)

Step to Reproduce:
Given a java interface, like the one below

package mypackage;

public interface IMyService {
    Long doService(MyDTO dto, MyOtherDTO other) throws MyServiceException;
}

Right-click doService method, and "Show Call Hierarchy" (Shift+Alt+H).

Expected Behavior:
I was expecting a list of calls to doService, either over a reference to the given interface or subinterface thereof, or any implementing class, or subclass thereof.

Actual Behavior:

The "References" view appears with a very very long list of method calls, aptly rooted at doService(MyDTO dto, MyOtherDTO other), but the calls are actually those of new Long(...).