Thanks for your quick response but you misunderstand me.
I have the Organizer program on the right monitor and the Editor program on the left (Monitor 1). This has worked perfectly normally in versions 14 and earlier, and with monitor 1 (left) set to Main Display as is my usual setup.
But with APE 2018, when selecting an image from the Organizer to be loaded into the Editor, the edit panel comes up on Monitor 1 over the Editor and cannot be got onto monitor 2 where it should appear over the Organizer.
When monitor 2 (right) is set as main display and used for Organizer, then Organizer edit panel appears as normal on monitor 2.
See attached photo.
As I always use two monitors I have not had any problems with PSE13 and two monitors.
Setting up your scenario with PSE13 I could not duplicate this problem. Not with editor on main monitor nor editor on other monitor.
In the past Photoshop has never supported two monitors in any correct manner, as there was always a long running forum of fixes for that, and it just never stopped. I won't argue such things anymore. Two monitors has always had bugs whether now or some time in the future it can. I know this is a a beehive with more problems to come. I don't need two screens as I multi-task. I told you what I think and I won't argue. My advice was disconnect one to see if that's the problem. You won't. So, I'm out.
Jack had luck with it, maybe he can help you. Maybe he has his editor on his first monitor, and his organizer on a second monitor (for whatever reason if there is one). Go fer it Jack. Robert needs help.
Like I said, if Jack can tell you how to work two monitors, you will have it your way.
Otherwise, most of us won't say because it depends upon your hardware configuration and Windows version. This is not a Photoshop problem because Photoshop does not have a setup page of instructions for that, as it is not Adobe supported.
I am a Windows engineer, a network chief, and two monitors for one program is not usually supported for Photoshop. Photoshop is highly robust and complex as it is.
Let Jack help you. Maybe he has a way to tell you. But I will bet he won't, unless you can tell him your hardware configuration, Windows version and ALL information pertaining to your computer. I asked for that before, and again, you are not giving us any information. And again ... for that reason, I am out.
Steve Lehman, MCSE (Microsoft VCertified Systems Engineer) for Robert's info
I'm using a single graphic card NVIDIA GeForce GTX 750 Ti with double outputs and uptodate driver of course.
But because PSE2018 has more issues (reason I scrapped it from my system) it might easily be a bug when using two monitors. I don't think Adobe will do something about it. So it works or you'll have to put up with it....