OTBR : beta version : double entities (1 active, 1 unavailable

activated beta version of OTBR.
Now, I have the devices with double entities? One active and one unavailable?
The unavailable can’t be removed.

You might have to expand on this. When you say “devices” in reference to OTBR, do you mean that the Thread Integration is showing double OTBRs?

Yes.
When I go to matter server I see them also double. When I search the unavailable one and delete it there, the two disappear. After a restart of ha. I get one back.