People Picker shows Users deleted from Site (UIL)

Hi,

i want to restrict People Picker to Users in the Site collection using the properties:

OnlySearchWithinSiteCollection
PeopleEditorOnlyResolveWithinSiteCollection

It works as expected. People picker only resolves existing users. Not possible to add other AD Users.

Now i delete a user either by clicking (X-remove) from UserInfo Page (/_layouts/15/userdisp.aspx?id=99&force=true)

or by using powershell: >Remove-SPUser -Identity "i:0#.w|domain\username" -Web $RootWeb

In both cases People Picker still resolves the deleted user.

If i add the deleted User again the former Entry will show up with the same ID and properties in the User Information List.

Its  a good thing - if e.g. at later migrations something goes wrong because of deleted users.

But how can i hide these "Zombie" - Users  from People Picker?

regards

Markus