Uploading images or other files from Android phone to Dropbox via 'share to Dropbox Android app', the behavior used to be that the folder I navigated to and used for uploads would be persistent across sessions & days, unless I changed location on a subsequent upload. Now the upload target directory resets to the top level of my Dropbox directories each time I start a new upload session. How can this be fixed, either by users or Dropbox, to return to previous behavior?