When I plug in my Thrustmaster FGT Rumble 3-in-1 racing wheel, the RetroArch UI menu gets unusable.
It turns out the analog pedals are normally in the “up” position, and this sends the UI continuous cursor down events. And that’s not all that goes wrong. I’ve spent several hours troubleshooting other symptoms that seem to be related but not manifesting themselves in any obvious way. (BTW, I’m posting this under the dev section because I plan to get into the code so I don’t waste any more time chasing my tail on these types of problems. I have 40+ years of C/C++ desktop dev experience)
The work-around is to map this controller to a port other than player 1 and turn OFF “All Users Control Menu.” … This is not ideal for my setup. I’m using RA as strictly an arcade emulator and I keep several controllers/custom panels plugged in at once all mapped to player 1 in the core.
The ideal solution, I think, should be an “Auto Repeat OFF” menu control option. This would stop the cursor down from running amuck and force the user to hit/tap the down button once for each line down event. I imagine that’s not such a big deal for gamers with mega thumb strength and agility 
I should mention I haven’t completely figured out how to map the analog pedals in this. I had it working with an older version for a bit, but it was a struggle to get the pedals mapped since they’re not normally at a zero (0) value. Maybe there’s something I’m missing, or maybe it’s a whole other dev topic.