1. Have the Preview pane open 2. Select some text in the Kate editor window 3. Press Ctrl+C 4. Messagebox appears: "The key sequence 'Ctrl+C' is ambiguous. Use 'Configure Shortcuts' from the 'Settings' menu to solve the ambiguity. No action will be triggered." Workaround: Close the Preview pane before using Ctrl+C to copy text.
*** This bug has been marked as a duplicate of bug 388568 ***