Deleted and removed BT adapter discovered again

I had an ASUS USB adapter running which I deleted. I removed the ASUS from the USB port. After that I inserted a new Zexmte usb BT adapter.

The Zexmte was discovered properly, but a minute later the MAC of the deleted ASUS adapter was discovered too. That’s weird, because that one isn’t even inserted.

What is happening here and how to correct this?

Using a dedicated NUC for HA.