I've configured 2 zones in sharepoint 2013. Both zones are configured to use NTLM and FBA authentication in order to have full availability of all users in the people picker. My extranet zone (FBA) ...
On the Windows Authenticated side of an extended web application with FBA, the people picker is only working when I also enable FBA through Central Administration for the Windows Authenticated web ...
SCENARIO I correctly set up FBA on SharePoint 2010 following these tutorials (among others): ...