I'm using footage from an HC-X1 (basically the same as the UX-180) and have no problems using PPro 2017 and Windows 10. On edit - see that you are referring to 2018, but can't see what problem you would have, unless using Windows 7.
Thanks for the info.
I’m using a MAC.
What file format are you using?
Sent from my iPhone
"A MOV file is a common multimedia container file format developed by Apple and compatible with both Macintosh and Windows platforms."
I do not know if this affects Mac users or not but on PC's many times you have to rename the extension from ".mov" to ".mp4" to make them playable. Many times both formats contain MPEG4 media.
Apple ceased support for the Windows version of QuickTime in 2016
I'm looking at purchasing the UX180 as well. My concerns are the 8 bit 4:2:0. Do you notice issues with color correction in post? I color correct on everything, but not the level of a feature film. Simple lumetri color, sat, tint, etc.