RPi4/400 video driver currently supports 1920x1080 max, support for higher resolutions isn't fully implemented yet.
The pixel-wrap is a known issue in the video driver, see here vc4-kms-v3d-pi4 offscreen quad leaks to the left side of the screen buffer · Issue #3667 · raspberrypi/linux · GitHub and here [BUG] Final output image overflows by 1 pixel to the right, pixels wrap around to the left of the screen · Issue #4779 · LibreELEC/LibreELEC.tv · GitHub
ATM we're waiting for fixes for these issues, when they are included in the RPi kernel/video driver we'll add them to LE as well.
so long,
Hias