this is the second screen replacement I’ve had this happen to, but it looks like I’ve fixed it. I’m a repair shop so I have access to just the touch bar module. Just to see what happens, I disconnected the battery, connected the new Touch Bar (just the digitizer, the lcd is under the board). Booted it up and the touch works on the new bar. Reversed everything and connected the old Touch Bar, and everything works again. Hope it’s a permanent fix. Works after a restart, too. Edit for clarification: you need to have another Touch Bar module on hand. This is the 10” strip of glass that houses the digitizer and OLED. You will need to order one from your favorite shop. Connect the new module to the computer, just the digitizer connection, you can leave the OLED connection for the one still attached the the keyboard. Boot the machine, test the external TB module touch, if it works, turn off machine and reconnect original TB digitizer connection. That’s what worked for me.