Subject: bug#40121: 27.0.90; ERC incorrectly reuses single buffer for channels of same name on multiple networks

From: Kevin Brubeck Unhammer <[email-masked]>
Date: Mon, 22 Jun 2020 15:33:59 +0200

I have bisected. The regression seems to have been introduced in commit
cdefc045893a7fed57856ac385ab41c71f61c09f
"Fix problem with erc buffer renames after reconnect"
which was supposed to solve
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=30639

Reverting that commit fixes it for me.