I am extremely unhappy to report that there is a regression on this issue with the latest 1.6.0 BIOS update on Latitude 7490. Pressing multiple keys at the same time now triggers the same behaviour as it did with the original BIOS (pre-1.4, which seemed to fix it) - missed keystrokes and random characters inserted.The keyboard was invented many decades ago, why is this still an issue in 2018? It is so absurd that it makes me think that there is something much more sinister going on, like a sloppy keystroke logger in the Intel ME interfering with my typing. Is this the case, Dell?
If this issue is not permanently resolved ASAP, I will be returning the machine for a full refund.