EXIF data stripped when attaching photo

After todays update of Agenda (which is great) I’ve been playing around with adding photos on my iPhone X. Attaching photos works as expected. However, when I preview the photo and try to look at the EXIF data, this data is not there.
What I tried to do is looking for the location data. I use the Apple Shortcuts app to do this. With the “where was this taken?” shortcut within this app you can see the location of the photo on a map.
When looking with the ViewEXIF app I see no EXIF data at all.
Is this on purpose or is this a bug?

Images are converted to PNG files inside the app. We can see if we can preserve this in future. Thanks for the feedback!