For example, in vi-insert mode I input following in the command line:
# foo abc
The cursor is right after 'c'. Now if I press ESC then it'll go to vi-command mode and the cursor will move to under 'c'. But if I press jj the cursor would be still after 'c' and if then I press h the cursor will skip 'c' and move to under 'b' . In 4.3, ESC and jj works the same so there must be something changed in 4.4. Please take a look.