Description of problem:
After creating a VM with rawhide iso Fedora-Server-dvd-ppc64le-Rawhide-20180218.n.0.iso, I got curious behaviour on pty (bad char encoding) when I do some commands.

let's see a sample:
I do a simple command like this one below several time
[root@vm55 ~]# ls | grep sample
[root@vm55 ~]#

some time the command is not working correctly
[root@vm55 ~]# ls | grep sample
-bash:  grep: command not found

if a do a copy paste of each command behind in a file and look at it in hexa, I got the following:
[root@vm55 ~]# echo 'ls | grep sample' > sample.ko                              [root@vm55 ~]# echo 'ls | grep sample' > sample.ok
[root@vm55 ~]# hexdump -C sample.ok
00000000  6c 73 20 7c 20 67 72 65  70 20 73 61 6d 70 6c 65  |ls | grep sample|
00000010  0a                                                |.|
00000011
[root@vm55 ~]# hexdump -C sample.ko
00000000  6c 73 20 7c c2 a0 67 72  65 70 20 73 61 6d 70 6c  |ls |..grep sampl|
00000010  65 0a                                             |e.|
00000012

The command having the problem have a bad blank coding char just after the pipe
ok: blank is 20
ko: blank is c2 a0 (note that we can still the 2 and 0 but on different bytes)

This is always reproductible. I tried it with different english languages (gb, us ...) installations with different qemu versions.
[root@vm55 ~]# localectl
   System Locale: LANG=en_US.UTF-8
       VC Keymap: us
      X11 Layout: us
[root@vm55 ~]# uname -r
4.16.0-0.rc1.git4.1.fc28.ppc64le