EXTENDED MONITOR 16:9 NOT WORKING WELL AFTER IPADOS18 UPDATE

Hi, im using ipad air 5, m1, before updating to ipados18, my extended monitor working well, perfectly, at 1920x1080 16:9.

But after the ipados18 update, the extended monitor display is there, but the mouse and tracking pad, and also mouse cursor, cant work well, as there is not supporting 1920x1080 16:9. only supporting 4:3 . the mouse cursor/tracking pad cursor having a boundary on the extended monitor.

Can somebody help me with these?