Discord.Net SpeakingUpdated only triggering once per user

A few months ago every time somebody in a channel with the bot connected to started or stopped to speak, the SpeakingUpdated event on the audioClient was triggered. But now it only gets triggered the first time a user in a channel starts to speak. Is there anything I need to do to reset the event trigger or is this a bug with the API?

Dec 11 '19 14:12 n1kPLV

Can you provide example code for us to replicate the bug?

Jun 01 '20 17:06 jnccd

Here is some example code for the Audio side:

public class AudioService
{
    private readonly DiscordSocketClient _discord;

    public AudioService(IServiceProvider services)
    {
        _discord = services.GetRequiredService<DiscordSocketClient>();
    }

    public async Task JoinAudio(IGuild guild, IVoiceChannel target)
    {
        var audioClient = await target.ConnectAsync();
        audioClient.SpeakingUpdated  += AudioClient_SpeakingUpdated;
    }

    private async Task AudioClient_SpeakingUpdated(ulong userID, bool speaking)
    {
        Task<SocketUser> user = Task.Run(() => _discord.GetUser(userID));
        Console.WriteLine((await user).Username + (speaking ? " started" : " stopped") + " speaking");
    }
}

A proof-of-concept project can be found here. It will only produce output like this even when speaking is interrupted (green circle in Discord disappears):

20:22:59 Discord     Discord.Net v2.2.0 (API v6)
20:23:00 Gateway     Connecting
20:23:00 Gateway     Connected
20:23:01 Gateway     Ready
20:23:15 Audio #1    Connecting
20:23:15 Audio #1    Unknown OpCode (Hello)
20:23:15 Audio #1    Connected
n1kPLV started speaking

Edit: Clarified the example Code and fixed some typos

Jun 01 '20 18:06 n1kPLV

I also have the same issue. I am able to receive audio bytes on the AudioInStream for the user, but the SpeakingUpdated events don't fire more than once.

Sep 17 '20 05:09 monodop

Still seeing this issue as of today. Trying to determine when the user has started and stopped speaking but this event only fires once when the user starts speaking.