[SDL2] R Shoulder + Y Combination not working on specific controller.

[LukasATBK]

I'm using a Rock Candy Wired Controller for Nintendo Switch, but I don't think this only happens with said controller. Like the title says, the R Shoulder + Y Combination isn't being registered, but if I add another button or trigger to the combination, it suddenly works (as far as that button press goes) It isn't a problem with my gamepad, as I tested it on various programs as Windows' joy.cpl and hardwaretester.com, and it's also not my own code since it happens with other games that use SDL2.

Extra info in case that helps: Mapping: 030000006f0e00008701000000000000,Rock Candy Wired Controller for Nintendo Switch,platform:Windows,a:b2,b:b1,x:b3,y:b0,back:b8,guide:b12,start:b9,leftstick:b10,rightstick:b11,leftshoulder:b4,rightshoulder:b5,dpup:h0.1,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:b6,righttrigger:b7, PID: 0187 VID: 0E6F