[Box2d] Collision issues

[zingzags]

So I am having issues with collision. For some reason when my entity moves to another fixture it is not able to jump. The only exceptions I have noticed so far is when the object lands on a fixture, if it jumps to another fixture, or if its in between two fixtures. These are the only time where the code will work and I am able to jump.

package net.brokegames.www;

import com.badlogic.ashley.core.Entity;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Contact;
import com.badlogic.gdx.physics.box2d.ContactImpulse;
import com.badlogic.gdx.physics.box2d.ContactListener;
import com.badlogic.gdx.physics.box2d.Filter;
import com.badlogic.gdx.physics.box2d.Fixture;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.Manifold;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.uwsoft.editor.renderer.components.TransformComponent;
import com.uwsoft.editor.renderer.components.physics.PhysicsBodyComponent;
import com.uwsoft.editor.renderer.scripts.IScript;
import com.uwsoft.editor.renderer.utils.ComponentRetriever;

import net.brokegames.www.physics.CollisionFilter;
import net.brokegames.www.physics.Sensors;

/**
 * @author Steven
 *
 */
public class Player implements IScript {
	
	private TransformComponent position;
	private Vector2 speed;
	private PhysicsBodyComponent physics;
	private final float MAX_VELOCITY = 2f;
	private Fixture footSensor;
	private boolean isGrounded = false;
	
	@Override
	public void init(Entity entity) {
		position = ComponentRetriever.get(entity, TransformComponent.class);
		physics = ComponentRetriever.get(entity, PhysicsBodyComponent.class);
		speed = new Vector2(.5f, 1f);
	}

	@Override
	public void act(float delta) {
		if (physics.body != null && footSensor == null) {
			physics.body.getFixtureList().get(0).setUserData(Sensors.BODY);
			Filter filter = new Filter();
			filter.categoryBits = CollisionFilter.CATEGORY_PLAYER; //It will allow us to filter out other players from the collision detection system.
			physics.body.getFixtureList().get(0).setFilterData(filter);
			physics.body.setFixedRotation(true); //The player will not spin around
			createBodyFixtures();
			createCollision();
		}
		Vector2 vel = physics.body.getLinearVelocity();
		if (Math.abs(vel.x) > MAX_VELOCITY) { // We need to set the max Linear Velocity of the moving object
			vel.x = Math.signum(vel.x) * MAX_VELOCITY;
			physics.body.setLinearVelocity(vel);
		}
		if (Gdx.input.isKeyPressed(Keys.D)) {
			physics.body.applyLinearImpulse(new Vector2(speed.x, 0), physics.body.getWorldCenter(), true);
			position.scaleX = 1;
		}
		if (Gdx.input.isKeyPressed(Keys.A)) {
			physics.body.applyLinearImpulse(new Vector2(-speed.x, 0), physics.body.getWorldCenter(), true);
			position.scaleX = -1;
		}
		if (Gdx.input.isKeyPressed(Keys.W) && isGrounded) {
			physics.body.applyLinearImpulse(new Vector2(0, speed.y), physics.body.getWorldCenter(), true);
		}
		
	}

	
	private void createBodyFixtures() {
		PolygonShape polygonShape = new PolygonShape();
		polygonShape.setAsBox(0.3f, 0.3f, new Vector2(1f,0), 0f);
		FixtureDef def = new FixtureDef();
		def.shape = polygonShape;
		def.isSensor = true;
		footSensor = physics.body.createFixture(def);
		footSensor.setUserData(Sensors.FOOT);
		
		polygonShape.setAsBox(0.3f, 0.3f, new Vector2(2f, 1), 0f);
		def.shape = polygonShape;
		def.isSensor = true;
		footSensor = physics.body.createFixture(def);
		footSensor.setUserData(Sensors.RIGHT);
		
		polygonShape.setAsBox(0.3f, 0.3f, new Vector2(0f, 1), 0f);
		def.shape = polygonShape;
		def.isSensor = true;
		footSensor = physics.body.createFixture(def);
		footSensor.setUserData(Sensors.LEFT);
		polygonShape.dispose();
	}
	
	
	public void createCollision() {
		ProjectZen.getScene().world.setContactListener(new ContactListener() {//Cant wait until Android can run Java 8 huehuehue!!

			@Override
			public void beginContact(Contact contact) {
				System.out.println(contact.getFixtureA().getUserData() + " " + contact.getFixtureB().getUserData());
				if (contact.getFixtureB().isSensor()) {
					if (contact.getFixtureB().getUserData() != null) {
						if (contact.getFixtureB().getUserData().equals(Sensors.FOOT)) {
							isGrounded = true;							
						}
					}
					if (contact.getFixtureA().getUserData() != null) {
						if (contact.getFixtureA().getUserData().equals(Sensors.FOOT)) {
							isGrounded = true;
						}
					}
				}
			}

			@Override
			public void endContact(Contact contact) {
				if (contact.getFixtureB().getUserData() != null) {
					if (contact.getFixtureB().getUserData().equals(Sensors.FOOT)) {
						isGrounded = false;
					}
				}
				if (contact.getFixtureA().getUserData() != null) {
					if (contact.getFixtureA().getUserData().equals(Sensors.FOOT)) {
						isGrounded = false;
					}
				}
			}

			@Override
			public void preSolve(Contact contact, Manifold oldManifold) {
				// TODO Auto-generated method stub
				
			}

			@Override
			public void postSolve(Contact contact, ContactImpulse impulse) {
				// TODO Auto-generated method stub
			}
			
			
		});
	}
	
	@Override
	public void dispose() {
		
	}
	
	public Vector2 getPosition() {
		return new Vector2(position.x, position.y);
	}
	
}

I have also added an image so you guys can have a visual representation of what is going on.