Windows 10 Login Screen Problem

Since the (current) Windows Insider Build 10547 a Problem occurs with the Login Screen after installing Comodo CIS.
After installing and configuring Comodo CIS the LoginScreen is not responding anymore to any input. All Buttons and clickable Icons do not respond anymore. Even the password/PIN text field is not respnsive. The result is that a login is impossible. Mouse Cursor is working. Neither Input through Touchscreen/MS touchcover nor Keyboard is possible. Starting in Safe-Mode, everthing works fine.

Can you reproduce the problem & if so how reliably?:
Yes. 100% (testet on MS SURFACE 2 PRO)

1: Used fresh/clean install Windows 10 Build 10547
2: Install Comodo CIS 8.2.4073
3: Configure Comodo :
Antivirus Enabled: Realtime-Protection On
Defense+ Enabled : Hips Safe Mode, HIPS Advanced Protection Mode, Auto-Sandbox enabled
4. After restart the Problem occurs.
5. Workaround : start in Safemode, enable autologin and disable automatic passwordprompt after locking the pc.

Exact CIS version & configuration:
Comodo x64
Enable HIPS: Safe Mode, HIPS Advanced Protection Mode
Auto Sandbox: Enabled

Modules enabled & level. D+/HIPS, Autosandbox/BBlocker, Firewall, & AV:
Antivirus - Realtime
Firewall - Custom ruleset
Autosandbox - Enabled
HIPS - Safe mode (Sicherer Modus)
Viruscope - Enabled

Have you made any other changes to the default config? (egs here.):

TYPE : MS Surface 2 Pro
OS version, SP, 32/64 bit, UAC setting, account type, V.Machine used:
Windows 10 x64 Build 10547
Account: Local admin
Other security/s’box software a) currently installed b) installed since OS, including initial trial security software included with system:

Does it respond to ctrl-alt-del? I need to use that to log in 10547 and the new 10565. I never checked if it is related to CIS though.

nope, only safe mode works

Ctrl-Alt-Del is not related to CIS. Other Insiders have also commented and complained about this “new” feature since v10547.
Ctrl-Alt-Del is now required by Windows 10 before you can log in. All buttons are disabled until the key combo is pressed.

Thanks John. Do you have an article referring to it or is it something that will show up when starting the process of submitting the bug when possible related issues are shown?

I don’t believe this is a bug, and until enough Insiders complain, the Microsoft devs do not seem keen on removing it.