Device Deletion not synchronized

Hello all,

I’m using latest AWS stack (installed 2019-12-16). Synchronizsation of registered devices works nicely on either side. However, when I delete a device it will not synchronize at all, regardless if I delete it on AWS or TTN. Unfortunately, the device is recreated on the side where I deleted it after a few minutes.

Any words? Is it a feature or bug?

Thanks, Ralf A.