Error on adding a wildcard interface

Hello,

At the moment of adding the interfaces to a firewall zone:

set firewall zone WAN interface ppp+

this error appears:

vyos-configd[669]: Failed to apply firewall: /run/nftables.conf:45:22-22: Error: syntax
vyos-configd[669]: error, unexpected +, expecting comma or '}'         oifname { ppp+ }
vyos-configd[669]: counter jump VZONE_WAN                      ^
vyos-configd[669]: /run/nftables.conf:54:22-22: Error: syntax error, unexpected +,
vyos-configd[669]: expecting comma or '}'         iifname { ppp+ } counter return
vyos-configd[669]: ^ /run/nftables.conf:86:22-22: Error: syntax error, unexpected +,
vyos-configd[669]: expecting comma or '}'         oifname { ppp+ } counter jump VZONE_WAN
vyos-configd[669]: ^ /run/nftables.conf:95:22-22: Error: syntax error, unexpected +,
vyos-configd[669]: expecting comma or '}'         iifname { ppp+ } counter return
vyos-configd[669]: ^
vyos-configd[669]: Sending response 2

The version is:

$ show version 
Version:          VyOS 1.4.0
Release train:    sagitta

Thanks in advance,

EDIT: Added a bug report

You have to use ppp*

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