When you try to expose siteaccess aware configuration for you bundle, accordingly to: https://doc.ezplatform.com/en/latest/cookbook/exposing_siteaccess_aware_configuration_for_your_bundle/ then you will get wrong default values when

1. You didn't define key for possible array of values per siteaccess (in my example it is include_content_types)
2. You didn't define any key and left only siteaccess name in configuration file

Steps to reproduce

1. Create your own bundle
2. Create Configuration, e.g.: https://gist.github.com/kmadejski/f8480e3e97864c6b3b82b295dde85deb
3. Create Extension, e.g.: https://gist.github.com/kmadejski/0786780fadf47afcabf459406a8371a9
4. Create proper entry in config.yml, e.g.: https://gist.github.com/kmadejski/01ddac794bee34fb2e788f3d5cc60e6d
5. Try to use configuration values in controller (or somewhere else, doesn't matter where), e.g.: https://gist.github.com/kmadejski/316f169429a5ae790d6ffb79bfe6e156

Current results:

array (size=2)
  0 => 
    array (size=1)
      0 => string 'default' (length=7)
  1 => string 'default' (length=7)

array (size=2)
  0 => 
    array (size=1)
      0 => string 'default' (length=7)
  1 => string 'default' (length=7)

array (size=2)
  0 => 
    array (size=0)
      empty
  1 => string 'nor' (length=3)

array (size=2)
  0 => 
    array (size=2)
      0 => string 'pol1' (length=4)
      1 => string 'pol2' (length=4)
  1 => string 'default' (length=7)

array (size=2)
  0 => 
    array (size=0)
      empty
  1 => string 'default' (length=7)

Expected results:
Current results for getting parameters without indicating siteaccess name directly and eng and pol siteaccesses are correct.
These for nor and ger siteaccesses are incorrect, see expected results below:

array (size=2)
  0 => 
    array (size=1)
      0 => string 'default' (length=7)
  1 => string 'nor' (length=3)

array (size=2)
  0 => 
    array (size=1)
      0 => string 'default' (length=7)
  1 => string 'default' (length=7)