Yeah. That's the one. Some people have reported that replacing with a 10k ohm resistor also works. Current conjecture is that it's to do with the use of internal pull-up resistors and the 100k ohm resistor dropping power too much.
I'm not versed enough in this to really understand how it all works....thread is here
https://onstep.groups.io/g/main/topic/75518845#24142
I still have to test if my modified boards works properly, but I'll post when I have tested.