I'm trying to add a CardDAV address book that is stored on my own server. The server does not have a valid CERT certificate. kaddressbook detects this problem as expected and opens a window saying: "The server failed the authenticity check. The host name did not match any of the valid hosts for this certificate." In this window, I get the option to click "Continue". A child dialog opens then with the option, "Would you like to accept this certificate forever without being prompted?" There's the option "forever" or "for this session only". However, I cannot click on either, because its parent window is still modal and blocks any interaction with this child dialog. I did not find any way to get around this problem.