voidtools forum

Yes and though I would not suggest this to most it would also solve the issue.

Not entirely accurate; I am the admin and only account on my PC but I did not completely disable UAC, only UAC prompting as you cannot completely disable UAC through User Account Control Settings like you can in Windows 7.

Any method to run as admin other than the option in Everything results in Everything opening on top with focus as desired and I've since been using the compatibility setting. I have UAC prompting disabled for my own reasons (yes I do know the risk) and when enabled Everything does open as desired.

Using the "Run as administrator" option in Everything causes the program to open behind other windows and shifts focus to the topmost window. Running as admin from either context menu or compatibility fixes this.
Everything v1.4.1.887 (x64)
Windows 10 Pro x64 Fall Creators build (1709)