https://bugzilla.redhat.com/show_bug.cgi?id=1605054
--- Comment #2 from Yuki Okada yuokada@redhat.com --- Same issue here.
Fedora 28 workstation gnome-terminal-3.28.2-2.fc28.x86_64 ibus-1.5.18-5.fc28.x86_64 ibus-mozc-2.23.2815.102-1.fc28.x86_64
"reset" or "clear" command didn't work.