Electronic submissions for publication have their problems. In the old days when you sent in a paper copy of an abstract they might occasionally cut off an edge when it went under the camera. I will report on my recent experiences with the Bulletin of the American Physical Society because they have been the worst but I have had similar problems with other journals and conferences.
My last submission to BAPS had a % symbol dropped. This did not occur in the echo to my electronic submission. I was using the American Physical Society's own software (Latex).
The submission to BAPS just prior to that one had no errors that I noticed but the one just before that had 5 extra characters inserted in various locations throughout the abstract. In past years I have had as many as 3 or 4 words dropped in an abstract. Sometimes the sense was lost completely.