Custom Format (multiple.fields) not get title from Page Field Connect - formatted output are html-tags and Umlaut-Entities

[August]

 

Dear community, 

I'm trying to display the page title of another field  in a selection next to the page title:


It only looks alright on this admin-page then saved, until the 1st choice (Page Reference)  is changed to show other options in the 2nd field (Connect Page Field):

{title} - {connect_page_field_title} :

Hierarchy 1st field

In addition, Umlauts of user names are not displayed correctly, there are HTML entities too.
On the same page I've  figured out, that Umlauts are displays correctly with following Setting in Custom format (last Screenshot):

*.page selector will show an Umlaut correct here:

{title.page} {title_of_parent_child_page.page}

Please, please help!

Edited January 30 by August
correction