LR Mobile in the Develop module suddenly deletes the file while it is being worked on.

This problem began with the latest update. This happened 4 different times. Twice the files went into the delete folder and two files just vanished from online. Fortunately the files are backed up on my computer, but are gone from online.

Since there is no delete icon in the Develop module I know the deletions were not an accident.  I have plenty of online storage space as well as on my phone.