Thanks for the tag /u/Any_Plankton1268 I'll shoot this over to our team to dig into the disparity here.
I myself have both Left Shift applied to Boost on both the UFO and Cars keybind, is Left Shift bound to anything else in your controls outside of vehicle controls that it might be causing the warning? (building, weapon slots, etc)
Thanks for the reply. Left shift is bound to roof.
Ahh ok thanks for the response, this'll help.