Try the Dell forums next. Dell does not issue source code so only Dell can fix driver issues.
In parting I usually find this to be driver, hardware or pilot error. That is, I continue to use my Dell Service Tag to get the latest drivers and most Dells also have the Dell Quickset app I must install as well.
Latitude, Running Windows 10, this issue just popped up:
The left button suddenly is now acting as shortcut menu instead of click. So now both left and right buttons are click shortcut.
Going into the touchpad interface, the left button is clearly assigned as click and right is shortcut menu.
In addition, reassigning the buttons via the interface has absolutely no effect. No matter what you assign them, they remain both shortcut menu. Also, unclicking "Two finger click for shortcut menu" completely disables both buttons ??!!
I reverted the driver back to the previous version (2006) and the left button now correctly works as click, but I lost the interface and the cursor is acting erratically at times. Going back to the 2015 driver and I am back to the same problem, left button is shortcut menu.
This is clearly a driver/software issue. Can someone assist with this issue?