i also noticed 2 input devices. Maybe the remote it switching between them?? Anyway, i forced udevadm to use event5 and not event6 just to try it out.
I: Bus=0003 Vendor=2017 Product=1690 Version=0110
N: Name=“OSMC Remote Controller OSMC Remote Controller”
P: Phys=usb-xhci-hcd.0.auto-1.2/input0
S: Sysfs=/devices/platform/fde00000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1.2/1-1.2:1.0/0003:2017:1690.0001/input/input5
U: Uniq=
H: Handlers=sysrq kbd leds event5
B: PROP=0
B: EV=120013
B: KEY=7 ff980000 7ff e0beffdf 1cfffff ffffbfff ff7fcffe
B: MSC=10
B: LED=1f
I: Bus=0003 Vendor=2017 Product=1690 Version=0110
N: Name=“OSMC Remote Controller OSMC Remote Controller”
P: Phys=usb-xhci-hcd.0.auto-1.2/input1
S: Sysfs=/devices/platform/fde00000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1.2/1-1.2:1.1/0003:2017:1690.0002/input/input6
U: Uniq=
H: Handlers=kbd mouse0 event6
B: PROP=0
B: EV=1f
B: KEY=3007f 0 0 0 0 4c3ffff 17aff32d bf544446 0 0 70001 130ff3 8b17c000 677bfa d951dfed 9ed680 4400 0 10000002
B: REL=143
B: ABS=1 0
B: MSC=10