Here the same. I followed the following steps:
1: Open a existing file, big file
2: export to PDF, choose for example pdf small size
3 after generating choose share
4 save pdf
5 choose ok
now I return to a black screen where the file is not visible, like the screendump of Tilda Rose.
BUT
the file is visible, but not gone. It’s still exists. This is a bug.
RPReplay_Final1698949381.mp4