I have added two main things

1. The bug ID and the Short description of the bug will be shown on the top of the bug detail shown in the respective fields.

2. Added one Hide button which will Hide the bug detail if clicked.

The bug detail was previously showing

Now it is showing the bug id, Short Description and one hide button like:

The  function of the Hide button is to hide the bug detail and show the list  of the bugs. It will help the user to view the list clearly and select  bug which he/she want to see the detail. like:

I have changed some background functions to increase efficiency.