`wg set` doesn't change endpoint

Installing and Using OpenWrt
1

I'm having some trouble with wg set. It doesn't change peer's endpoint reliably.

I have a working wg tunnel to a VPN provider with peer's endpoint set to server A IP. There's another server B. I can switch to it just fine with uci or luci. The wg interface is called wgclient. I want to switch peer endpoint with wg set. This sometimes works:
wg set wgclient peer server_public_key endpoint server_ip:server_port

When it works the peer endpoint changes just fine. There's a brief interruption in traffic and my tests show that traffic goes through the new endpoint.

However, in most of my attempts, wg shows endpoint changed for a couple of seconds or not at all and then it starts displaying the old endpoint.

I would prefer to avoid using uci to achieve this, as I don't need to have this switch be permanent.

Why wg set doesn't just change the endpoint IP? What can I do to debug this further?

Here's my config:

config interface 'wgclient'
        option proto 'wireguard'
        option private_key '***'
        list addresses '10.0.0.3'
        option mtu '1420'

config wireguard_wgclient
        option public_key 'server_public_key'
        option preshared_key '###'
        list allowed_ips '0.0.0.0/0'
        option endpoint_host 'server_ip'
        option endpoint_port 'server_port'
        option persistent_keepalive '15'