Tested Feb04 Build. I also get the console showing up when using 4k_3x1 or 5k_3x1 preset. And I don't get real time preview, still just some weird lines. SD overclock seems to work as usual.
edit: @OlRivrRat Here is my configured ML folder for you to download:
https://we.tl/t-j0qTMBjswdPut the camera in 1080_24fps canon mode, load the ML files on your SD card, install ML, restart the camera to photo mode, let the lua script for SD Hack start and after a "done" appears on the screen, switch to video mode. From there go to Movie tab, make sure "Crop mode" is set to "4k 3x1 24fps". If you press Av while crop mode is highlighted, you should see that bitrate is set to 9 bit and ratios is set to 2.35:1 . Leave the crop mode setting and switch to RAW video and press Av. You should see that Resolution is set to 4000x568 and Data format is set to 14-bit lossless. Set preview to "framing" and leave the ML menu. Make sure to press magnification once, so you get into x5 Zoom mode. You should be able to see a black and white like preview. Hit recrod and your camera should be able to record the clip IF your SD Card is fast enough. Maybe you get an older build with SD_Hack AND benchmark tool, to see if your SD card really is fast enough.