1. emacs -Q
2. eval the following:

  (electric-indent-mode)
  (electric-layout-mode)
  (setq electric-indent-chars (append "{}" electric-indent-chars))
  (setq electric-layout-rules '((?\{ . after) (?\} . before)))

3. type `f o o {'

Result expected: a buffer containing
----- schnipp -----
foo {

----- schnapp -----

Result received: a buffer containing
----- schnipp -----
foo{

----- schnapp -----

Patch is enclosed that fixes the problem.