I created a new user and tested with that, same results. So it would appear to not be a user-specific configuration problem.
Another few minor bits of information:
* If I only have a single KDE app in a workspace, and it is the focused window on the workspace, the flashing doesn't happen.
* Minimised KDE apps don't flash.
I created a new user and tested with that, same results. So it would appear to not be a user-specific configuration problem.
Another few minor bits of information:
* If I only have a single KDE app in a workspace, and it is the focused window on the workspace, the flashing doesn't happen.
* Minimised KDE apps don't flash.