Problems with Exporting PDF

[CamMiller]

I am working on a project and trying to export to anything that I can. My end goal would be to PDF. I have tried to export as every type that I can (TIFF, PDF, AIX, etc.) When I look at the layout within ArcGIS Pro, here is how it looks:

However, when I export to anything, here is how the map looks:

I have tried messing with the color management settings, but I am at a lost right now. Any help would be greatly appreciated.

[AlfredBaldenweck]

Not sure if anyone's submitted a bug report yet, but I've found in Pro 3.1.3 that blending modes do not work on PDFs; the layers just don't draw.