Place a window such that it appears on both screens. Toggle present windows/overview Note that the window appears on both screens. Not sure if this is a design choice.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5604
Git commit 1a4606d990b89f403e048edef4b07b407b94a370 by Yifan Zhu. Committed on 11/04/2024 at 16:36. Pushed by fanzhuyifan into branch 'master'. scripting/windowmodel: match screen closest to center for filter When filtering windows by screen, match the screen closest to the window center, instead of testing whether the window is visible on the current screen. The new method guarantees that when filtering by screen, the window appears for exactly one screen. Previously windows spanning multiple screens appear on all of them, and off-screen windows are not shown in any screen. Related: bug 485337 FIXED-IN: 6.0.4 M +1 -1 src/scripting/windowmodel.cpp https://invent.kde.org/plasma/kwin/-/commit/1a4606d990b89f403e048edef4b07b407b94a370
Git commit fc3a2d0d5d39c3003c2909580bf2c38a1dc6ba1f by Yifan Zhu. Committed on 11/04/2024 at 19:16. Pushed by fanzhuyifan into branch 'Plasma/6.0'. scripting/windowmodel: match screen closest to center for filter When filtering windows by screen, match the screen closest to the window center, instead of testing whether the window is visible on the current screen. The new method guarantees that when filtering by screen, the window appears for exactly one screen. Previously windows spanning multiple screens appear on all of them, and off-screen windows are not shown in any screen. Related: bug 485337 FIXED-IN: 6.0.4 (cherry picked from commit 1a4606d990b89f403e048edef4b07b407b94a370) M +1 -1 src/scripting/windowmodel.cpp https://invent.kde.org/plasma/kwin/-/commit/fc3a2d0d5d39c3003c2909580bf2c38a1dc6ba1f