Unexpected FeedGroup already exists error when recreating a deleted FeedGroup

[sinapy]

When I delete a FeedGroup using DeleteFeedGroupAsync and then immediately try to recreate one with the same ID using GetOrCreateFeedGroupAsync, I receive a BadRequest error stating that the feed group already exists.
It’s unclear whether this is expected behavior or an API issue — it seems like the deletion should make the ID available again.

code snippet:

// Build the client
var builder = new ClientBuilder()
    .ApiKey(apiKey)
    .ApiSecret(secret);
var client = builder.Build();
var feedsClient = builder.BuildFeedsClient();

// Create a FeedGroup
var myFeedGroupFirstResponse = await feedsClient.GetOrCreateFeedGroupAsync("polls3", new GetOrCreateFeedGroupRequest()
{
    Custom = new Dictionary<string, object>()
    {
        { "description", "A feed group for polls" }
    }
});
Console.WriteLine($"Feed Group created with ID: {myFeedGroupFirstResponse.Data.FeedGroup.ID}");

// Delete the FeedGroup
await feedsClient.DeleteFeedGroupAsync("polls3");
Console.WriteLine("Deleted existing feed group 'polls3' if it existed.");

// Attempt to recreate the same FeedGroup
var myFeedGroup = await feedsClient.GetOrCreateFeedGroupAsync("polls3", new GetOrCreateFeedGroupRequest()
{
    Custom = new Dictionary<string, object>()
    {
        { "description", "A feed group for polls" }
    }
});
Console.WriteLine($"Feed Group created with ID: {myFeedGroup.Data.FeedGroup.ID}");

Observed Behavior

The second call to GetOrCreateFeedGroupAsync throws:

GetStream.GetStreamApiException: HTTP BadRequest: {"code":4,"message":"GetOrCreateFeedGroup failed with error: \"Feed group with ID \"polls3\" already exists\"","StatusCode":400,"duration":"0.00ms","more_info":"https://getstream.io/chat/docs/api_errors_response","details":[]}

Expected Behavior

After deleting a feed group, I should be able to create another feed group with the same ID — or, if this is intentionally disallowed, the SDK/API documentation should clarify that deletion does not fully release the ID.

Environment

SDK: GetStream.StreamNet 2.1.0
.NET version: .NET 10

cc @itsmeadi