Crash after issuing multiple calls to RT.AddCreateListener

I’m having a problem issuing multiple calls to RT.AddCreateListener on MAUI using Backendless.NET 6.7.0
if I make multiple calls to AddCreateListener, I get the following crash:
An item with the same key has already been added. Key: SUB_RES

Example:
var cmrt = Backendless.Data.Of<chat_messages>().RT();
cmrt.AddCreateListener(e =>
{
System.Diagnostics.Debug.WriteLine(e);
});
var nmrt = Backendless.Data.Of<notification_messages>().RT();
nmrt .AddCreateListener(e =>
{
System.Diagnostics.Debug.WriteLine(e);
});

After startup and exception will be thrown:
An item with the same key has already been added. Key: SUB_RES

Hello, @Howard_James.

Thank you for report about this issue. We will look into this problem.

Regards, Nikita.