Delete set comm-list [Commit failed]

Hi
my vyos version is
Version: VyOS 1.3.0-epa3
Release train: equuleus

I tried to add community list too my bgp peer
with such commands
set policy route-map export-peer1 rule 30 set comm-list delete
set policy route-map export-peer1 rule 30 set comm-list comm-list my-community-list

when I tried to delete rule 30 from my route-map
I see this message after commit

[ policy route-map export-ugmk-ua rule 30 set comm-list ]
You must configure a comm-list

[[policy route-map export-ugmk-ua]] failed
Commit failed
[edit]

I tried to resolve this issue by different ways. But every time i see same message after commit

it looks like this

https://phabricator.vyos.net/T3712