Bump, I have the same problem as budasy. I am using MacOS 11 and attempting to connect with Sequel Ace.
As a crummy workaround one thing I did (that works!) is to edit the conf/mysql/my.conf.hbs file and replace socket = {socket}} with socket = /Users/MYUSER/Library/Containers/com.sequel-ace.sequel-ace/Data/mysql-wptest.sock. I also had to update the conf/php/php.ini.hbs wherever I saw {{mysql.socket}} I replaced with /Users/MYUSER/Library/Containers/com.sequel-ace.sequel-ace/Data/mysql-wptest.sock
And then in Sequel Ace I just specify the same path for my socket. Works. Mostly. The wordpress site works and also my Sequel Ace connects. The annoying thing that I have noticed is that when I shut down the site there is an error saying that it cannot dump the mysql database. Not sure if it matters though - I am brand new to Local, so can’t tell yet.