PB or bug with join.exe

[DONNAT Arnaud]

Hello,

I have this files:
test1.txt
5 titi
8 tata
10 tutu
14 toto

test2.txt
5 # sample1
8 # sample test
10 # sample2
14 # sample3

testbug.txt
5 # sample1
10 # sample2
14 # sample3


But, i don't know why display (under windows 2000 SP2):
D:\test>join.exe -a1 test1.txt testbug.txt
5 titi # sample1
8 tata
10 tutu
14 toto

I would like to see:
D:\test>join.exe -a1 test1.txt testbug.txt
5 titi # sample1
8 tata
10 tutu # sample2
14 toto # sample3


It's ok with:
D:\test>join.exe -a1 test1.txt test2.txt
5 titi # sample1
8 tata # sample test
10 tutu # sample2
14 toto # sample3

It's a bug, or other?

Info about join.exe:
D:\test>join.exe --version
join (GNU textutils) 2.0
Written by Mike Haertel.

Copyright (C) 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


Thanks,

Arnaud Donnat