To resolve this, simply use the PassivePorts directive in your proftpd.conf to control what ports proftpd will use for its passive data transfers:
PassivePorts 60000 65535
sudo ufw statusroot@moscow-battle ~ # sudo ufw status
Status: active
To Action From
-- ------ ----
2022 ALLOW Anywhere
8443 ALLOW Anywhere
443 ALLOW Anywhere
2053 ALLOW Anywhere
1980/tcp ALLOW Anywhere
27000:27155/udp ALLOW Anywhere
8080/tcp ALLOW Anywhere
80/tcp ALLOW Anywhere
5000 ALLOW Anywhere
21 ALLOW Anywhere
20 ALLOW Anywhere
2022 (v6) ALLOW Anywhere (v6)
8443 (v6) ALLOW Anywhere (v6)
443 (v6) ALLOW Anywhere (v6)
2053 (v6) ALLOW Anywhere (v6)
1980/tcp (v6) ALLOW Anywhere (v6)
27000:27155/udp (v6) ALLOW Anywhere (v6)
8080/tcp (v6) ALLOW Anywhere (v6)
80/tcp (v6) ALLOW Anywhere (v6)
5000 (v6) ALLOW Anywhere (v6)
21 (v6) ALLOW Anywhere (v6)
20 (v6) ALLOW Anywhere (v6)