I have recently installed Windows 10 on ARM (1909 because I wanted to avoid any cellular issues) on my Lumia 950. It's not the XL version.
I have also enabled the Dualboot functionality. However, I cannot use the WoA installation anymore because I'm running into a very weird issue where every time I let WoA boot up, after a few seconds the system shuts down and displays the "Shutting down" animation. I have attached a video of this happening here: https://howtogetfreestuff.site/video.mp4
I know the domain name looks sketchy, but I just so happened to have access to this website for file sharing, since this forum doesn't support MP4 attachments.
Also, yes, the Windows Phone 10 part works normally.
Thanks in advance for your help!