I just updated to A20_android_422_TS_USB_UART_I2C_WIFI_LAN_HDMI_LCD_1024x600_release_3 and find that the X-position on touch is reversed. Y-position is OK.
If I turn on Developer Options->Show Touches I can see that touching further left results in dots further right.
It seems as if Xmin and Xmax are reversed.
Using a mouse works, but something seems to be wrong for touch.