diff 2 files and print only difference bash in Jenkins job

Question

I try to diff to 2 file in bash in Jenkins job

If i do this in minigw (eg gitbash) all working just fine

But if run same command in Jenkins i got all from files 2

For example i try 3 different methods

comm -1 -3 --nocheck-order file1.txt file2.txt

grep -vxF -f file1.txt file2.txt

diff --changed-group-format='%>' --unchanged-group-format='' file1.txt file2.txt

File is output of sqlplus command i and output is already sorted like this:

First file: STANDARD CONSTANT PL_SQL CREATE_OUT RECALL

And second file

STANDARD CONSTANT PL_SQL CREATE_OUT RECALL CONFIRM

I'm using git bash as shell and works in Windows. In git bash if i run any above command i got only changes and if i run same command in Jenkins i got all output from file2.txt

This driving me crazy(

UPD. I also try windows command findstr /bevg:file1.txt file2.txt

Same result(