I have just the same issue here and it does occur since installing the previous update, so it's nothing unique to Ver. 24.2, which I was hopping would tackle the problem. Well, it doesn't. It happens for no reason at all in the middle of a job creation as PDF. Double clicking in Finder fails to open the PDF once in a while. I'm still on MacOS 10.13.6 (unfortunately) and need to save to PDF. I'm not willing to ressort to saving as AI and then to PDF.
I have just the same issue here and it does occur since installing the previous update, so it's nothing unique to Ver. 24.2, which I was hopping would tackle the problem. Well, it doesn't. It happens for no reason at all in the middle of a job creation as PDF. Double clicking in Finder fails to open the PDF once in a while. I'm still on MacOS 10.13.6 (unfortunately) and need to save to PDF. I'm not willing to ressort to saving as AI and then to PDF.