Subject: The same problem is in Fedora 33.

From: Олег Кочкин (Oleg Kochkin)<[email-masked]>
Date: Sun, 13 Dec 2020 20:22:43 +0300

This bug showed up for me too.
Not noticing your message, I sent a report to 
https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=195#38