Dropbox text editor inserting junk characters

Here's a further explanation of my problem.

I use small text files to control various machines and equipment.  A computer monitors my Dropbox text files for changes and commands.  I modify the text files from various computers, including an Android phone.

While making some changes to my program, I noticed the incoming file had garbage characters at the end of a line I would edit.  The garbage would exists for only a few moments after being changed.  After being read a couple of times, the file would read ok without the garbage.

So, a shorter summary of the core problem...

I would make a change to a small text file on my phone.  A computer would read the file using the Dropbox APIs, but the modified lines would contain garbage.  The computer would read the file a few moments later and the garbage would be gone.

The bug might be on my side, but I have not encountered any issues until recently.  I am using Dropbox APIs, C language and CURL.

Finally... yes, Dropbox personnel can email me for more information if necessary.