If compare binary files (size ~ > 100 KB, can not exactly say, on a small files a few kilobytes its not reproduced), then after a few (approximately 3 - 10, depend of filesize and/or quantity diffs

With text files this is not, also with some exe (eg if compare TOTALCMD.EXE 9.12 vs TOTALCMD.EXE 9.20, then for some reason everything is fine).
TC 9.20 beta 3 x32 & x64, OS Win 8.1 Pro x64.