### Summary Jupyter notebook displays do not use the syntax highlighting theme in *Preferences* to display code blocks. The display is the same no matter what the syntax highlighting selection. ### Steps to reproduce - Create (or view) Jupyter notebooks with Python code cells in a repo. - Open notebook view in a separate tab - Adjust "Navigation theme* to see that the rest of the notebook changes after refresh - Adjust "Syntax highlighting theme" to see that the notebook code cells **do not** change on refresh ### Example Project Not sure if this is OK, but my public project+notebook (https://gitlab.com/mmoran0032/sequence-embeddings/-/blob/main/notebooks/20220117-mind-modeling.ipynb) can be referenced. I've used it in the screenshots below. ### What is the current *bug* behavior? Code cells in Jupyter notebook do not change when selecting different syntax highlighting preferences. Example of wrong code cell highlighting below. Generated with "Navigation = Dark mode (alpha)" and "Syntax = Dark". Similar outputs happen with different navigation themes. No change is observed whan changing the syntax theme.  ### What is the expected *correct* behavior? Code cells in Jupyter notebook *do* change when changing the syntax highlight preference. Example preferences used for the above view:  ### Relevant logs and/or screenshots n/a ### Output of checks This bug happens on GitLab.com #### Results of GitLab environment info :shrug: #### Results of GitLab application Check :shrug: ### Possible fixes :shrug: