When running --mus on a Pixel with two displays (internal display and one external display) I can't drag a Chrome browser window between the two displays. The start of the drag works correctly and the window shows up on both displays while on the border of the two. Something goes wrong when the mouse cursor hits the edge of the display, the window snaps back to the original display despite the mouse now being on the other display.

This bug doesn't happen with Ozone X11, so it probably has something to do with mouse warp?