With the latest Syncope trunk code, I noticed that if I create a new LDAP Connector (1.3.6) it appears to be requiring me to enter a Block Size + Change Log Block Size, even though these parameters are optional and both default to 100. You can reproduce by just creating an LDAP Connector + clicking on save. At the top of the screen you can see:
'Host' is required.
'TCP Port' is required.
'Base Contexts' is required.
'Block Size' is required.
'Change Log Block Size' is required.
The issue seems to be related to the new component "SpinnerFieldPanel" used to represents numeric connector configuration properties.