![Optimizing Jupyter Notebook: Tips, Tricks, and nbextensions | by Shadab Hussain | Towards Data Science Optimizing Jupyter Notebook: Tips, Tricks, and nbextensions | by Shadab Hussain | Towards Data Science](https://miro.medium.com/v2/resize:fit:1400/1*m87_Htb_9Pstq0UcvNJ49w.png)
Optimizing Jupyter Notebook: Tips, Tricks, and nbextensions | by Shadab Hussain | Towards Data Science
Markdown Tables cannot merge cells both horizontally and vertically · Issue #8864 · doxygen/doxygen · GitHub
![Merge cells" is missing from context menu when multiple cells are selected · Issue #6318 · jupyterlab/jupyterlab · GitHub Merge cells" is missing from context menu when multiple cells are selected · Issue #6318 · jupyterlab/jupyterlab · GitHub](https://user-images.githubusercontent.com/2223279/57298180-3f60ca00-70da-11e9-882c-e5353bfb3687.png)
Merge cells" is missing from context menu when multiple cells are selected · Issue #6318 · jupyterlab/jupyterlab · GitHub
![Attachments are lost after merging two markdown cells · Issue #8414 · jupyterlab/jupyterlab · GitHub Attachments are lost after merging two markdown cells · Issue #8414 · jupyterlab/jupyterlab · GitHub](https://user-images.githubusercontent.com/591645/82071525-819ded80-96d6-11ea-841c-a77882d81b29.gif)