Container resets after dismissing a toast even if still containing other toasts

[Aviv-Galmidi]

Steps to reproduce:

1. Create a few (four) toasts with semi-long timer (10seconds) in the same position using either dismissible or closeOnClick set to true
2. Dismiss any one of the toasts using either the "x" button or by clicking it (based on options given in step 1)
3. Create a few (one-two) more toasts
4. The new toasts now cover up the old toasts
   Expected behaivor: The new toasts would be added to the end of the list and not cover up other toasts

jsfiddle with example: https://jsfiddle.net/Aviv_Galmidi/6218y3t9/6/