Python in Excel - not in toolbar

I have MS Excel (Current Channel) via an M365 - Business Premium license

I have Python in Excel; I know this because if I type '=py' in a cell and hit tab I get a python cell with the green [py] box. However, I do not get the Python group in the Formula toolbar... why?? This grouping is supposed to have the 'Insert Python', 'Initialization', and 'Reset' controls in a grouping named Python. Subsequently, I have had to create a custom grouping with the relevant python controls added manually...

What is the cause of the python controls missing from the Formula toolbar?