Scenerio: Trying to add Questions from Question Bank to Quiz Module. 

Desired Actions: 

1. Fill name of Category in Text Field and Apply filter.
2. Number of Question in the selected category is 46.
3. Get the list of Questions appearing in Apply filter. 
4.  See the First 20 Qustions for selection and addition in Quiz.
5. Click on Next button and get the second 20 Questions. 
6. Click on Next button and get the third 6 Question. 

Actual Behaviour

1. Fill name of Category in Text Field and Apply filter.
2. Number of Question in the selected category is 46.
3. Get the list of Questions appearing in Apply filter. 
4. See the First 20 Qustions for selection and addition in Quiz.
5. Click on Next button and get the second 20 Questions.  When Clicked on Next Button Some times the selected Filtered Category Disappears. And filter is removed completely. No Questions appeaing in the list.  Sometimes, Filter chnages to some random category and Question set of another random category appearing in the screen. 

Youtube link: https://youtu.be/7BkOR4syVjU