account-notify causes /who spam in server buffer

[NetSysFire]

Describe the bug

When I join channels, I get an unfunny amount of /who spam in my server buffer (set to independent for reference).
This is new and happened ever since I enabled account-notify and extended-join. People in #weechat tell me its probably account-notify and not extended-join. Whatever it does, it is also the thing that colors nicks that are away green (by default) in the nicklist I think.

Steps to reproduce

First of all: This is a relay setup. My local weechat connects to my bouncer, which is another weechat of the same version that is configured as a relay in IRC mode. Both have the same capabilities enabled (except the client, which additionally has server-time). I do not get the spam on the relay (very minimal setup there, does not have nicklist), only on this local client. /cycleing on the local client does cause a /who to be issued.

1. Make your relay reconnect to the network or join a channel you have not joined before. Or /cycle a channel.
2. The server buffer will be filled with the /who output, including End of /WHO list., indicating it must be issued by the local client.

Current behavior

Spam.

Expected behavior

The output goes to /dev/null.

Suggested solutions

No response

Additional information

No response

WeeChat version

4.2.2-2

What OS are you using?

Relay: Ubuntu 20.04, local client: Arch Linux

On which terminal are you running WeeChat?

kitty

Which terminal multiplexer are you using?

none