With SE v23.0.2, I've noticed a couple of times, when I use File Diff that sometimes an include statement or #ifdef statement is truncated at the beginning of the line.
For example, the statement "include "myfile.h"" will show on the right side frame as "lude "myfile.h"", and the left frame will have "#inc" flagged as a difference in red. And in this case, it only happens with one include statement in a list of 8 include statements.
I have only noticed this twice so far. I have a pair of files I can submit that show the issue if that would be helpful. These aren't test files, and they are not very large, about 400 lines.