SAS EG program history/commit sometimes shows entire program replaced when adding new lines of code

[tracyedinger]

I have been using SAS EG program history for embedded programs for a while now. Usually it works as expected--when I add code to an existing program that has already been committed, the new code is highlighted green and the previous code is not highlighted (see screenshot below):

Instead of just highlighting changes, sometimes it shows a replacement of the entire program--all of the previous is highlighted red, and then the same code plus the new code is highlighted green, as if the program has been replaced entirely. Below is a screenshot of the same addition showing up as replacement of entire file (the top half of this commit shows all the previous code highlighted red):

Has anyone else had this issue, and have you found a way to make sure that only the new changes are highlighted? Thanks in advance for any help you can offer!