Calling AdmitToMeeting(id) always returns a Success but never actually permits the user into the meeting

Meeting SDK
1

SDK Version: 6.3.10 (7580)

Description
Under Linux (Ubuntu WSL2), Calling AdmitToMeeting always returns a Success but never actually permits the user into the meeting.

ZOOM_SDK_NAMESPACE::SDKError err = meetingService->GetMeetingWaitingRoomController()->AdmitToMeeting(participantid);
result = ZoomApiMessages::apiResponse(“admitToMeeting”, err);
Log::log(info, “AdmitToMeeting result: %s”, result ? “true” : “false”);

other calls to the SDK work.