Bug 488110

SUMMARY
Hey I have been beta testing Plasma 6.1 for the last couple of weeks and I recall reading that changes were being made to make sure that apps open on the correct screen in a multi monitor setup. The problem I am having is that I actually want the application to open on the screen that has the mouse on it, so I went into system settings and made that change under the advanced tab of window behaviour. 

Howerver, as of Plasma 6.1 It seems that the last active screen takes precedence over that setting. Kinda making it seem as if it is not working at all. For example lets say that I have two monitors and open dolphin in full screen mode on monitor 2. I then move the mouse to monitor 1 and open yakuake. It will open on monitor 1 this time. However if I close yakuake and then open it again. This time and every time after that it will open on monitor 2 because with no apps open on monitor 1. Focus gets transferred to the app open on monitor 2. 

This happens for any combination of apps and not just yakuake. Another example is if I have dolphin open on monitor 2 and then open kwrite on monitor 1. Drag the mouse to close kwrite. Then open some other app. The mouse is still on monitor 1. The last screen I used is still monitor 1, but if I open kwrite again in this instance. It will open on monitor 2.

This means that anytime I want to open a window on monitor 1 and there is an open app on monitor 2. I need to constantly reach down and wiggle the mouse to keep it from opening on monitor 2 despite the fact that the mouse is already on monitor 1.

STEPS TO REPRODUCE
1. Open system settings -> window management -> window behavior -> advanced tab
2. Set Window Placement to be under mouse.

OBSERVED RESULT
Windows don't always open under the mouse and instead seem to be trying to detect what screen the user last interacted with. 

EXPECTED RESULT
The window should open under the mouse cursor.

SOFTWARE/OS VERSIONS
Operating System: EndeavourOS 
KDE Plasma Version: 6.0.90
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.1
Kernel Version: 6.9.1-zen1-2-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 62.7 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3080/PCIe/SSE2
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7C95
System Version: 1.0