For a couple of weeks I've been bugged by what I suspect is a setting that I've somehow inadvertently changed. I'm trying to key information into an OpenOffice spreadsheet that is being viewed in another application, typically Firefox. Both windows are sized such that they fit on the screen at the same time. Prior to a week or so ago, this was very straight forward. Now when I click on an app in the Task Manager after opening OpenOffice, other open apps are minimized - sometimes all of them, sometimes just the most recent. I usually have Dolphin, a terminal window, Firefox, OpenOffice and sometimes a spreadsheet open. A friend who is far more familiar with Linux than I, suggested that the memory manager may have gotten confused and that logging out should clear this up. I tried that to no avail, as well as rebooting. I've also looked through the options in each of the apps that I've got open to see if there's any obvious user options that might be affecting this. I've found nothing.

I initially posted this on the openSUSE forum and my only response was that in KDE there is a setting that controls this behaviour but he didn't recall where to set it. I've looked and can't seem to find anything that looks appropriate.

Anyone have an idea what might be going on and how to correct it?

This sounds like you are having issues with Multiple Desktop support. You may wish to try disabling it altogether if you do not need it.

System Settings > Desktop > Multiple Desktops. Set the number to 1.

Otherwise, right click on the Window Decoration of the offending windows, and select "Move to Desktop" and select 1. Repeat for any windows which are not working correctly.

Sorry for not replying sooner but Real Life has been way too involving of late.

Thank you for the suggestion. This resolved my issues.