I am using ArcMap 10.8.1.
I've managed to find that an embedded PNG image (with a transparent background), whether saved as a part of a map or not, is not exported with the map itself in a right part of a map only (area cca 6-7 cm from the right edge). I want to export the map into a PDF format. The picture IS exported only without the transparent background or if it's positioned somewhere else on the map (the center, left side and corners). I've already tried to add the picture by copying it from another program and also to group it with another map elements as with a new dataframe. Nothing worked fot me. I don't always have the oportunity and space to move it to another side of the map and I need the picture to be with the transparent background as it is the logo of a project and there are rules of how it should look like.
Any ideas what is causing this behaviour?