run time error when configuring ip address on vlan1350 interface from webUI

1/ Firstly I had a hard time creating the vlan interface

• when I was creating this interface all other ip would not respond and it would rollback

• tried to create from the console menu, no error messages, I could see the interface with ifconfig but not visible from the UI

• tried again from the UI and it worked without any symptoms

2/ then created a bridge (bridge1350) -> ok

3/ then tried to add an ip to the vlan1350 interface and I get this error

Error: Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 137, in call_method
result = await self.middleware._call(message['method'], serviceobj, methodobj, params, app=self,
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1191, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/service.py", line 463, in update
rv = await self.middleware._call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1191, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/schema.py", line 973, in nf
return await f(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/network.py", line 1411, in do_update
await self.middleware.call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1233, in call
return await self._call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1191, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/schema.py", line 973, in nf
return await f(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/datastore/write.py", line 56, in update
raise RuntimeError(f'{len(rows)} found, expecting one')
RuntimeError: 2 found, expecting one