Just got the MacBook Pro 16 inch. ordered late Dec. arrived about a week later early Jan. 2020. The jumping cursor issue is happening right out of the box. Ridiculous. it happened a lot for me in Microsoft Outlook when composing an email. Don’t know if there are some “propietary” shortcut/key combonations in Outlook, but yes, but insertion point would jump back a couple rows of text; and/or delete entire sentences. Another odd occurence, is out of the blue, the current Outlook message would disappear (actually becomes a tab at the bottom of Outlook) and a new email would randomly open up. This new MBP is replacing a MBP from late 2014. That was an excellent machine and never exhibited that kind of behavior in the same Outlook application. It also happens when I’m in Word typing documents. I have to “undo” the “changed text” and keep going. A big productivity problem. Turning off “tap to click” did nothing for me. I’ve just now disabled “force click and haptic feedback”. Will report back if that helps or...
Don’t think I posted the successful conclusion. Again, as with many of these 2012/13 machines, the HD cable goes bad. Installed new HD cable; installed a new SSD. Client is very happy!