I am using a jp.106 type USB keyboard. In jp.106 keymap, key code 125 is assigned to backslash. When 12.1-STABLE starts, this key code 125 is not recognized. However when 11.1 RC3 starts, this key code is recognized and I can type backslash and pipe key by keyboard. It seems that a degrade happens.
This issue should be fixed by: https://svnweb.freebsd.org/changeset/base/358452 Please re-open if this is not the case. --HPS *** This bug has been marked as a duplicate of bug 224592 ***