Looking at this again, there is a small chance that it's related to LP#1974109.
So would you please try the s390-tools version from this PPA: https://launchpad.net/~fheimes/+archive/ubuntu/lp1974109+lp1959987+lp1990520+lp1990524+lp1996069+lp1996477 respectively: https://launchpad.net/~fheimes/+archive/ubuntu/lp1974109+lp1959987+lp1990520+lp1990524+lp1996069+lp1996477/+packages
Since this version fixes several issues.
Looking at this again, there is a small chance that it's related to LP#1974109.
So would you please try the s390-tools version from this PPA: /launchpad. net/~fheimes/ +archive/ ubuntu/ lp1974109+ lp1959987+ lp1990520+ lp1990524+ lp1996069+ lp1996477 /launchpad. net/~fheimes/ +archive/ ubuntu/ lp1974109+ lp1959987+ lp1990520+ lp1990524+ lp1996069+ lp1996477/ +packages
https:/
respectively:
https:/
Since this version fixes several issues.