I use a laptop with touch screen, neon dev unstable. Reproducible only using apps running natively under Wayland. open okular or konsole resize the window dragging some border touch maximize button in window decoration Result: window is not maximized. Depending on how the window was resized, sometimes the window changes its position on screen quickly and back to original position or sometimes the window remains in the new position.
cannot reproduce on neon dev unstable anymore.