Mac OS Sierra System Settings won't stay set I just got a new 15" MBP with Mac OS Sierra. I've changed the System Preferences to allow me to drag and drop things with the touchpad (under accessibility) and to prevent tap clicking.

But after I leave the system preferences pane, and return to check it out, the preferences have changed. Is this a known issue with Mac OS Sierra? Or did the method of confirming changes, change? I'm at a loss for this one.
It’s possible your Accessibility preference file is corrupted.

Open Finder, then press ⇧ shift ⌘ cmd G. In the popup textbox, type in ~/Library/Preferences.

Locate com.apple.universalaccess.plist and delete it. Now restart your system.

If the issue persists, you can delete the new preference file, then pull the original file back out of the Trash before restarting one more time.