I had an unusual issue when using DiskMakerX version 8 to create a Mojave install disk. While the process completed correctly, the issues came up after booting from the USB drive.
Apparently as of 10.14.1, the wireless Mouse / Keyboard assistant pops up. I have the Magic Mouse 2, and Apple Aluminum USB keyboard with the hub.
On the USB stick, the system was never able to link with the magic mouse, even though it was on, and pressing the button / holding the button didn't seem to work. The keyboard worked fine.
Oddly enough the Restore partition on the hard drive brought up the same assistant, but was able to link with the mouse just fine. Also the restore partition seems to remember the setup, so I haven't been asked again if I have to use it again.
I used a clean 8GB SanDisk USB stick, and a fresh download of the Mojave install app. I haven't tried making a disk from version 8.0.1. System is a late 2015 iMac 27" Did Apple Change the OS install? I've never been asked about keyboard / mouse prior to the 10.14.1 installer, nor has the USB installer ever had issues with the magic mouse.