Cannot connect to LDAP anymore

After updating my system to Fedora Silverblue 32 I cannot connect to my LDAP server anymore.

I removed ~/.var/app/org.gnome.Evolution to start from scratch but this did also not help.

1.
When I add an addressbook I cannot remove it anymore. I always get the error message: The name ist not activatable".

2.
When click on "Find possible Search Bases" I get an error message (see screenshot) and when I check the logs from my LDAP server I see that the dn is missing. Since anonymous access is not allowed this fails (I am not sure whether this search worked before, I only used this here for debuging).

```
5e922250 slap_listener_activate(6):
5e922250 >>> slap_listener(ldap:///)
5e922250 connection_get(12): got connid=1062
5e922250 connection_read(12): checking for input on id=1062
ber_get_next
ber_get_next: tag 0x30 len 12 contents:
5e922250 op tag 0x60, time 1586635344
ber_get_next
5e922250 conn=1062 op=0 do_bind
ber_scanf fmt ({imt) ber:
ber_scanf fmt (m}) ber:
5e922250 >>> dnPrettyNormal: <>
5e922250 <<< dnPrettyNormal: <>, <>
5e922250 do_bind: version=3 dn="" method=128
5e922250 send_ldap_result: conn=1062 op=0 p=3
5e922250 send_ldap_response: msgid=1 tag=97 err=48
ber_flush2: 39 bytes to sd 12
5e922250 do_bind: v3 anonymous bind
5e922250 connection_get(12): got connid=1062
5e922250 connection_read(12): checking for input on id=1062
ber_get_next
ber_get_next: tag 0x30 len 5 contents:
5e922250 op tag 0x42, time 1586635344
ber_get_next
5e922250 ber_get_next on fd 12 failed errno=0 (Success)
5e922250 conn=1062 op=1 do_unbind
5e922250 connection_close: conn=1062 sd=12
```
3.
When I click on "OK" I again get the message "The name is not activatable".

4.
The address book does not work. If I search something nothing is found. Also I don't see any activities in the LDAP logs.

I use version 3.36.1. Before the upgrade everything was working.
When I do LDAP request on the command line with ldapsearch it is also working as before.