It is an old problem, not related to any specific version of BitDefender.
When I "copy" something (whatever it might be) the contents is supposed to be present on the clipboard of Windows.
When I want to paste this "copied" item , I only paste the BitDefender icon (red ball)
When I paste a second or a third time to any other application, the same occurs again, which indicates that the clipboard only contains the BitDefender red icon, nut not what I was supposed to "copy".
A second attempt to copy usually does clear the situation.
This problem of copy/pasting only an icon is not systematic but still it occurs quite often.