title: JupyterHub - how to debug UI issues?
body: <p>We use jupyterhub cluster and without any noticeable change on our side, the notebook cells' height turned huge and static (attached a picture)</p>
  
  <p>Tried to fix the issue looking at - <a href="https://stackoverflow.com/questions/21971449/how-do-i-increase-the-cell-width-of-the-jupyter-ipython-notebook-in-my-browser">How do I increase the cell width of the Jupyter/ipython notebook in my browser?</a></p>
  
  <p>Managed to decrease the cells size but it's still static.</p>
  
  <p>Any suggestion what has might caused the change? And how to fix this?</p>
  
  <p>This is how our cells look today - </p>
  
  <p><a href="https://i.stack.imgur.com/UB825.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UB825.png" alt="enter image description here"></a></p>