Does anyone know if rich text is supported in Document Generation for PowerPoint?

I realise that it has been possible in Word for quite some time...however I have recently been trying to pass bullets / numbered lists to a PowerPoint template and my workflow always suspends with a non-descript internal error.

The same content happily slots into a Word template.

I cannot find anything definitive on this...I see reference to support for 'Office Documents', sometimes Word but it is not clear what the situation is with PowerPoint.