This is a longstanding issue with PowerDirector and it appears it also affects PhD. See if anything in this discussion (and the one I link to from there) help at all.
Otherwise, I think you should report the issue to CL directly from their contact/support page.
Cyberlink.com uses analytical cookies and other tracking technologies to offer you the best possible user experience. By using our website, you acknowledge and agree to our cookie policy. For more information on cookies or changing your cookies settings, read CyberLink’s Cookie Policy.