Comment 6 for bug 1971715

Hello, patch build resolved my issue as well

juggler@circus:/tmp$ dpkg -l idn libidn12
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=============================================================
ii idn 1.38-4build1 amd64 Command line interface to GNU Libidn
ii libidn12:amd64 1.38-4build1 amd64 GNU Libidn library, implementation of IETF IDN specifications
juggler@circus:/tmp$ idn корюшка.любовь
idn: could not convert from ASCII to UTF-8

juggler@circus:/tmp$ sudo dpkg -i ~/Downloads/idn_1.38-4ubuntu1_amd64.deb
juggler@circus:/tmp$ sudo dpkg -i ~/Downloads/libidn12_1.38-4ubuntu1_amd64.deb

juggler@circus:/tmp$ dpkg -l idn libidn12
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-=============-============-=============================================================
ii idn 1.38-4ubuntu1 amd64 Command line interface to GNU Libidn
ii libidn12:amd64 1.38-4ubuntu1 amd64 GNU Libidn library, implementation of IETF IDN specifications
juggler@circus:/tmp$ idn корюшка.любовь
xn--80atapk2c0b.xn--90aczn5ei