Elytra glide activating on one jump

When I jump one time my elytra activates and I start gliding.  Ive had this happen quite a bit since the new update and makes fighting mobs very challenging when im gliding about getting hit by a skeleton over and over. Also sprinting and jumping (like I always have done) the elytra activates and I started gliding and got way further off the ground (without rockets) than normal.