Comment 4 for bug 1887863

I believe the issue you're referring to is similar to this issue that was filed recently regarding the "Exec format error":

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965072

Will bring it up with the folks working on ksh93 to see if there's a resolution that can be found. Let me know if there's a github id that I can tag you on for any updates related to it.

Since you're on focal, you can use the 'ksh93' package, which is basically ksh93u+ that was spun off as a result of the transition to ksh2020 on the 'ksh' package. Recently, we have reverted ksh2020 back to ksh93 and removed the "ksh93" package in Debian. So please track the following package in Ubuntu for updates as this is back to ksh93 and should address your original issue on this bug report.

https://launchpad.net/ubuntu/+source/ksh