Broadcast domain bug: how to fix ?

Hi 

I have this bug on a 2750 running 9.9.1

https://mysupport.netapp.com/site/bugs-online/product/ONTAP/BURT/1378530

"error: details not available" status as part of the "broadcast-domain show"

but I get an error when I try to remove ports as it is the "Cluster" Broadcast Domain ?

Any ideas how to fix it then ?