Why falling down my Spectator if I push the Left Controll button?

Hi to all!

In the game, when I push the left Controll button the controlled pawn is falling to the ground.

Its an “inbuild” Spectator Pawn.

Q, E, SPACE, and LEFT_CONTROLL make unwanted movements…

Who and where are binded?

There isn´t any extra settings in the "Project Setting"´s Input section. Just MoveForward, MoveRight, Turn, LookUp

Platform: Windows

Thanks