Please refer to below screen shot :

Note: I have tried clearing cache, etc.

**NO active questions (All blank):**

![enter image description here][1]

![enter image description here][2]

**Other tabs working fine:**

![enter image description here][3]


  [1]: https://i.sstatic.net/v2R4O.png
  [2]: https://i.sstatic.net/Gabpx.png
  [3]: https://i.sstatic.net/603H7.png