File size copied exceeds displayed size
When copying files (at from Internal least to Dropbox, have not tested it with other providers or internal to internal) the copy process does not stop after reaching 100%. When checking the actually copies files only a fraction of what was reported has been copied so far.
See attached screenshot. Reported copied: 1869 of 751MB. Actually copied size seems to resemble the reported copied (1869)
Device: Joying JY-UM135N2D running Android 6, rooted