bash bug - unexpect file deleted using rm command

[root]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-redhat-linux-gnu' 
-DCONF_VENDOR='redhat' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib  -D_GNU_SOURCE -DRECYCLES_PIDS  
-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
--param=ssp-buffer-size=4 -m64 -mtune=generic -fwrapv
uname output: Linux minigeek.srve.com 2.6.32-754.10.1.el6.x86_64 #1 SMP Tue Jan 
15 17:07:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-redhat-linux-gnu

Bash Version: 4.1
Patch Level: 2
Release Status: release

Description:
        I deleted the file .DS_Store fom a fat32 partition as root.  bash 
properly warned me and I answered y which deleted that file.
        A second different file, named ._.DS_Store was also erased - but 
without warning, and I did not ask for this.  
        Therein lies the bug.
        I recreated two text files with different contents having those same 
names, and repeated the steps - same problem - both files got erased with the 
one rm command for just one of them.

Repeat-By:
        Create those 2 files. Delete just one.

Fix:
        probably some shell filename matching code has an error?