I had the same issue as I just bought a 22" Touchscreen to run Helios on.
The menus have changed in Win10 vs the guide you linked for Win7, but it appears that going to "Pen and Touch" from the Control Panel, then selecting the Press and hold Touch action, then selecting Settings, and unchecking "Enable press and hold for right-clicking" made the issue go away.
Before changing this I was having issues keeping secondary panels visible, selecting menus on the MFCDs, and inputting numbers into the UFC. Now, after a quick check, everything appears to be working as it should.
Best of luck! :joystick: :pilotfly: