Keyboard problem

When I try to use the\ key it comes up as ] when put in the Keyboard\Button box yet if I type in the modifier it registers as \ and finds nothing In the controls search box any plane it will show as \ yet if I go down and use it to show what its bound I hit \ and it registers as ] kneeboard not \ communication. It does that only in DCS and matters not what keyboard I use I must stress that it only happens in DCS. see short vid