PPTX: New Figure with caption AST element is breaking slide layout selection

[cderv]

In powerpoint, the new Figure introduced in Pandoc 3.0 for image with caption is breaking the Slide layout selection.

See difference below.

with 2.19.2

with latest

"Content with Caption" should be the slide layout chosen in both case.

Simple document

---
title: test
---

## Slide Title

Should be Content with caption layout 

![Caption](placehold.png)

Image file placehold.png: https://placehold.co/600x400/png