The FC installed screen package comes with the upstream example
screenrc file installed into /etc.  This file contains this block of
configuration foo

# Yet another hack:
# Prepend/append register [/] to the paste if ^a^] is pressed.
# This lets me have autoindent mode in vi.
register [ "\033:se noai\015a"
register ] "\033:se ai\015a"
bind ^] paste [.]

This breaks the ability to use C-a C-] to paste (which should work so
says the man page).  You can only use C-a C-] to paste while running vi.

If this section is removed, the C-a C-] pasting works as expected.