title: BottomSheetDialogFragment inside Fragment problem
body: <p>After showing BottomSheetDialogFragment inside Fragment and interacting with specific buttons like increasing price as per below photo, the Fragment disappear and showing as per second photo.</p>
  
  <p>code:</p>
  
  <pre><code>increase_price.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              String coun_cost = shipment_price.getText().toString();
  
              if (coun_cost.isEmpty()) {
                  counter_price = 0;
                  counter_price = counter_price + 5;
                  requestFocus(shipment_price);
                  shipment_price.setText(String.valueOf(counter_price));
              } else {
                  counter_price = Integer.valueOf(coun_cost);
                  counter_price = counter_price + 5;
                  requestFocus(shipment_price);
                  shipment_price.setText(String.valueOf(counter_price));
              }
          }
      });
  
      decrement_price.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              String coun_cost = shipment_price.getText().toString();
  
              if (!coun_cost.isEmpty()) {
                  counter_price = Integer.valueOf(coun_cost);
                  counter_price = counter_price - 5;
                  if (counter_price &gt;= 0) {
                      requestFocus(shipment_price);
                      shipment_price.setText(String.valueOf(counter_price));
                  } else {
                      counter_price = 0;
                      requestFocus(shipment_price);
                      shipment_price.setText(String.valueOf(counter_price));
                  }
              }
          }
      });
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/G93Fp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/G93Fp.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/YhjFJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YhjFJ.png" alt="enter image description here"></a></p>