Password being wrongly sanitized

Hi, today I encountered a problem where a user after the signup or the password reset could not login with is newly created password. It sound a bit strange at first but then I tested it myself and I reproduced the same error.

I found out that this problem occurs only if I use special characters. Digging at your code, I saw that you sanitize the password at stm_lms_restore_password (line 1940) and stm_lms_register (line 282).

I handled these two situations in this way:

for stm_lsm_register

//dont sanitize password
if( 'register_user_password' !== $field_key && 'register_user_password_re' !== $field_key ) {
    $data[ $field_key ] = STM_LMS_Helpers::sanitize_fields( $data[ $field_key ], $field['type'] );
}

and by just removing the function sanitize_text_field for stm_lms_restore_password

//dont sanitize password
$password        = $data['new_password'];
$repeat_password = $data['repeat_password'];

Would this be the right way of handling this problem?