The issue has been reported at ###@###.### by ###@###.###

If you have two text fields on a frame, the second
of which is setFocusTraversalKeysEnabled(false), then typing Shift+Tab
in the first field and then any letter will swallow that letter. This
is because the DefaultKeyboardFocusManager sets the
consumeNextKeyTyped flag on the Shift+Tab, which then suppresses the
next KEY_TYPED. Since the KEY_TYPED for Shift+Tab is missing, it
swallows the next normal key.