PowerBI Dataflows: Power Platforms Data sources missing from GUI

Hi,

Has anybody else encountered the Power Platforms options disappearing from the dataflows GUI?

https://docs.microsoft.com/en-us/power-bi/transform-model/dataflows/dataflows-create
The "Create a Dataflow" page shows a "Power Platform" Option, which contains the ability to connect to other Dataflows (highlighted), and this used to be the case as we had utilised this in the past.

However, now when creating a dataflow in the PowerBI Service (or trying to "Get Data" within an existing dataflow) those options appear to be removed:
(searching for "dataflow" as a source shows no results either)

I've got some powerquery written out that already connects one dataflow to another, and it seems like it still all works fine - has this functionality been dropped or could it just be a bug in the GUI?

Thanks