I have IOS 13.1.1 with plex beta version 6.2 (18292), since yesterday.
Since then, I saw that the camera upload function is broken in several ways.
it uploads plist files to plex
it uploads corrupted MOV files, the files are very light in size
For certain pictures, it uploads a JPG version which is the correct, readable, version plus a corrupted MOV version that has the same name than the JPG version.
Linked to the previous points as well, it seems to be re-uploading all files that had previously been uploaded, but in a corrupted way…
Thus, for the time being I turned off camera uploading.
I’ve had the same problem. Unfortunately this is the first time I’ve used the Camera Upload in months so I can’t say how if this is because of iOS 13 or not.