Without permissions to read user's data (but with the user still existing) editor is getting an error when editing the Landing Page

Setup:

• An additional admin user ("admin2") assigned to "Administrator" Role. User is located in /Users/.
• Additional user ("test_user") assigned to new "test" role with following limitations:

  module	function	limitation
  user	all function
  content	create
  content	edit
  content	versionread
  content	read	Node: Users
  content	read	Subtree: Home, Media, Users/Administrator users, Users/Guest accounts, Users/Editors, Users/Anonymous Users

They should mean that "test_user" has "read" access to everything except for "admin2"'s data.

Steps to reproduce:
1. Login as admin2
2. Edit "Home" landing page and publish (an existing landing page, so that "admin2" is not the creator and EZEE-1795 does not apply)
3. Log out, log in as "test_user"
4. Edit "Home" landing page
5. Publish

Result:
1. Error bar: " The content cannot be published (Connection error : 401.)" is visible.
2. In the network tab the following response is displayed:

<?xml version="1.0" encoding="UTF-8"?>
<ErrorMessage media-type="application/vnd.ez.api.ErrorMessage+xml"><errorCode>401</errorCode><errorMessage>Unauthorized</errorMessage><errorDescription>User does not have access to 'read' 'content'</errorDescription></ErrorMessage>

3. When going to "Home" Page again it can be seen that the Landing Page was in fact published, even though error was displayed.