ATTENTION PLASMA WIDGET, THEME AND ADD-ON DEVELOPERS:
KDE loves all your stuff, but you need to port it for it to work in #Plasma6. We have created a handy, easy-to-follow guide for extensions and widgets at
https://develop.kde.org/docs/plasma/widget/porting_kf6/
Theme developers, please check out this:
https://develop.kde.org/docs/plasma/theme/theme-porting-to-plasma6/
Porting is quite straightforward and should not take you long.
Keep your users happy! Port your stuff!
How can I move a window to the upper right tile with arrow keys? How the extension works is: I hit win+right, window gets moved to the right side of the screen. I hit it win+up, it now moves to the top-right tile. I hit win+left and it extends to be tiled to the upper half of the screen. I hit win+left again, it now is tiled to the top-left tile.
That is, to the best of my knowledge, not how kwin behaves. It is, however, how Cinnamon for example behaves.
Thats exactly how it works in Plasma, Meta+left/right/up/down tiles in half, and when you press meta+right+up or meta+up+right quickly after another, it tiles into that quarter.
I agree that this may not be very accessible.