On the notebook toolbar we have multiple sections of actions, and the first two are core sections: insert and execution. The Insert section is very stable and it always contains two actions: insert code and insert markdown. However the execution section has actions from both VS Code core and Jupyter extension, and with a mix use of visibility and enablement, it is not user friendly and often leads to mis-clicks.

Jupyter kernels

Initial state

Start execution

Execution fails

Execution succeeds

Non Jupyter Kernels (e.g. Pyodide)

Initial state

Start execution

Execution fails

Execution succeeds

As shown above, currently only Clear all outputs is using enablement while all others are using visibility, which can lead to change of positions for the actions and often when users want to interrupt or restart the kernel, their position changes and users click on wrong actions. cc @roblourens