Hi all. Thanks for your patience. Sincerely sorry for taking so long to get back to you on this. I’ve finally been able to find the post that I was able to use to solve the “unresponsive” button issue:
In RawInputWindows.cpp (around line 584 as of UE 4.22):
[FONT=Helvetica Neue]DeviceButtonData.bPreviousButtonState = DeviceButtonData.bButtonState;
is redundant. From what I remember, (this was a long time ago I looked at it), it’s basically creating an infinite loop that continues til interrupted and floods the program with input. By commenting out that line, the inputs all worked perfectly and predictably with the exception of the d-pad.
Perhaps this line of code served some purpose related to the d-pad? My level in C++ is too low to really get it. But hopefully this will help someone more advanced than myself track down a more proper way to fix the issue.