Okay, so I had to unplug both my controller and my HOTAS, but the tablet works as intended now.  I think I heard a sound when I tested it with just my HOTAS plugged in (no controller), and what may be happening is that the game is detecting my throttle position (full-stop) and interpreting it as a 'down' command on the tablet, constantly making the cursor go to either Exit or Sort Inventory.  I haven't tried it with the controller plugged in without the HOTAS, but it works with both of them unplugged.

Will do.  I had problems with...I think it was Skyrim and/or Fallout 4 having fits when the 360 controller was plugged in, even though I wasn't using it, so that's what made me check.  Will get back to ya.

Steam on Windows 10.  AMD FX 4350 Quad-core, 16Gb RAM, Radeon HD 7800 with 2048 Mb VRAM, driver version 17.4.4.  I'm on my way out the door till the afternoon, but when I get back I was intending to start from a fresh restart without my controller nor my X32 HOTAS plugged in to see if that helped any.