core fields displayed in front end after an update

After the 3.3.1.5 -> 4.1.3 update I got a warning message in back end :
Some form elements for item type: Article are set to be placed by fields manager:

id, alias, category, lang, vstate, disable_comments, notify_subscribers, notify_owner, captcha, layout_selection, timezone_info, created_by_alias, publish_up, publish_down, access, item_screen, lang_assocs, jimages, jurls, metadata, seoconf, display_params, layout_params, perms, versions

but
- either a placeholder field (of field type: 'Core Property') was not created for them
- or their placeholder fields is not assigned the content type

Please logout and re-login to backend management and visit the dashboard to create the fields automatically×Some fields are configured to be displayed more than once:

alias at [above, below]
category at [above, below]
lang at [above, below]
access at [above, below]
disable_comments at [above, below]
jimages at [tab02a, below]
jurls at [tab02a, below]
perms at [tab03, below]
timezone_info at [tab04, below]
created_by_alias at [tab04, below]
publish_up at [tab04, below]
publish_down at [tab04, below]
item_screen at [tab04, below]
metadata at [tab05, below]
seoconf at [tab05, below]
display_params at [tab06, below]
layout_selection at [tab07, below]
layout_params at [tab07, below]
versions at [tab08, below]


 

In the administrator/index.php?option=com_flexicontent page If I clicked on the "Install core property fields" button some core fields are displayed in the front end :



What should be done please ?

thanks

hello
go to your type
item view tab
> joomla article view
> set allow to yes > add uctom fields > disable
now you can can re use preview option in allow option
and save
bug corrected in next release