AFAIK, this bug is about the numlock problem.
For the definition of the "correct" fn key behavior, the correct bug seems to be https://bugs.launchpad.net/ubuntu/+source/linux/+bug/201711 ,
For the swapped <> and @#, see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/214786
AFAIK, this bug is about the numlock problem.
For the definition of the "correct" fn key behavior, the correct bug seems to be https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/201711 ,
For the swapped <> and @#, see https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/214786